Special Issue "Response to Polio Virus Disease Outbreaks in the Horn of Africa and Lake Chad Basin"

Deadline for Submission : Nov 10 2020

Polio Eradication Programme
WHO Regional Office for Africa
Brazzaville, Congo

Polio Outbreak, Horn of Africa, Polio Eradication

Published Papers

Overview of Polio Outbreak Response in Kenya, 2013 to 2015

Chidiadi Nwogu1*, Johnny Musyoka2, Carolyne Gathenji 1, Rosemary Nzunza4, Iheoma Onuekwusi3, Joseph Okeibunor5, Pascal Mkanda5, Hemant Shukla1, Shaikh Humayun Kabir1, Sam O Okiror1

11WHO Horn of Africa Coordination Office (HOA), Nairobi, Kenya

2Ministry of Health (MoH), Nairobi, Kenya

3WHO, Nairobi, Kenya

4Kenya Medical Research Institute (KEMRI), Nairobi, Kenya

5WHO Regional Office for Africa, Brazzaville, Congo


Globally, tremendous improvement has been made in Polio eradication since its inception in 1988. For the third time in a decade, Kenya has experienced a Polio outbreak along the border with Somalia. The affected areas were in Garissa County, replete with previous occurrences in 2006 and 2012. This article, give an account of series of events and activities that were used to stop the transmission within 13 weeks, an interval between the first and the last case of the 2013 outbreak.


In an attempt to stop further transmission and time bound closure of the outbreak, many activities were brought to fore: the known traditional methods, innovative approaches, improved finances and surge capacity. These assisted in case detection, implementation, and coordination of activities. The external outbreak assessments and the six-monthly technical advisory group recommendations were also employed.


There were increased case detections of >=2/100,000, stool adequacy >=80%, due to enhanced surveillance, timely feedbacks from laboratory investigation and diagnosis. Sustained coverage in supplemental immunisation of > 90%, ensured that immune profile of >=3 polio vaccine doses was quickly attained to protect the targeted population, prevent further polio infection and eventual reduction of cases coming up with paralysis.


Overall, the outbreak was stopped within the 120 days of the first case using 14 rounds of supplemental immunisation activities.

DOI: 10.29245/2578-3009/2021/S2.1103 View / Download Pdf

Polio Outbreak Investigation and Response in The Horn of Africa: 2013-2016

Samuel Okiror1*, Abraham Mulugeta2, Iheoma Onuekwusi3, Fiona Braka4, Sylvesta Malengemi5, John Burton6, Rustam Hydarav7, Brigitte Toure7, Bob Davis8, Carolyn Gathenji1, Chidiadi Nwogu1, Joseph Okeibunor9

1WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

2WHO, EMRO Amman

3WHO, Nairobi Kenya

4WHO Country Office, Nigeria

5WHO, Juba South Sudan

6UNHCR, Nairobi Kenya

7UNICEF, Nairobi Kenya

8American Red Cross, Nairobi Kenya

9WHO Regional Office for Africa (WHO AFRO)


There has been civil strife, spanning more than two decades in some countries and recurrent natural disasters in the Horn of Africa (HoA). This has consistently maintained these countries in chronic humanitarian conditions. More important however is the fact that these crises have also denied populations of these countries access to access to lifesaving health services. Children in the difficult terrains and security compromised areas are not given the required immunization services to build their immunity against infectious diseases like the poliovirus. This was the situation in 2013 when the large outbreaks of poliovirus occurred in the HoA. This article reviews the epidemiology, risk, and programme response to what is now famed as the 2013-204 poliovirus outbreaks in the HoA and highlights the challenges that the programme faced in interrupting poliovirus transmission here.


A case of acute flaccid paralysis (AFP) was defined as a child <15 years of age with sudden onset of fever and paralysis. Polio cases were defined as AFP cases with stool specimens positive for WPV.


Between 2013 and 2016, when transmission was interrupted 20,266 polio viruses were in the Horn of Africa region. In response to the outbreak, several supplementary immunization activities were conducted with oral polio vaccine (OPV) The trivalent OPV was used initially, followed subsequently by bivalent OPV, and targeting various age groups, including children aged <5 years, children aged <10 years, and individuals of any age. Other response activities were undertaken to supplement the immunization in controlling the outbreak. Some of these activities included the use of various communication strategies to create awareness, sensitize and mobilize the populations against poliovirus transmission.


The outbreaks were attributed to the existence of clusters of unvaccinated children due to inaccessibility to them by the health system, caused by poor geographical terrain and conflicts. The key lesson therefore is that the existence of populations with low immunity to infections will necessary constitutes breeding grounds for disease outbreak and of course reservoirs to the vectors. Though brought under reasonable control, the outbreaks indicate that the threat of large polio outbreaks resulting from poliovirus importation will remain constant unless polio transmission is interrupted in the remaining polio-endemic countries of the world.

DOI: 10.29245/2578-3009/2021/S2.1104 View / Download Pdf

Simulation Exercises To Strengthen Polio Outbreak Preparedness in The Horn of Africa: Experiences and Lessons Learnt

Samuel Okiror1*, Chidiadi Nwogu1, Obianuju Igweonu2, Rustam Hydarov3, Djiboui Karim4, Farkhard Imambakiev5, John Ogange6, Annet Kisakye7, Joseph Okeibunor8, Hemant Shukla9

1WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

2University of Nigeria, Nsukka

3UNICEF, Nairobi

4WHO headquarters, Geneva

5UNICEF New York

6World Health Organization, Kenya Country Office

7WHO, Uganda

8WHO Regional Office for Africa (WHO AFRO) Brazzaville, Congo

9WHO Headquarters, Geneva


Poliovirus importations and related outbreaks occurred in the Horn of Africa (HoA) following an initial outbreak, which started in Somalia, spread into Kenya within ten days and later into Ethiopia and gradually to other countries in the region. National preparedness plans for responding to poliovirus introduction were insufficient in many countries of the Region. We describe a series of polio outbreak simulation exercises that were implemented to formally test polio outbreak preparedness plans in the HoA countries, as a step to interrupting further transmission.


The Polio Outbreak Simulation Exercises (POSEs) were designed and implemented. The results were evaluated and recommendations made. The roles of outbreak simulation exercises in maintaining regional polio-free status were assessed. In addition, we performed a comprehensive review of the national plans of all for seven countries in the HoA Region.


Seven simulation exercises, delivered between 2016 and 2017 revealed that participating countries were generally prepared for poliovirus introduction, but the level of preparedness needed improvement. The areas in particular need of strengthening were national preparedness plans, initial response, plans for securing vaccine supply, and communications.


Polio outbreak simulation exercises can be valuable tools to help maintain polio-free status and should be extended to other high-risk countries and subnational areas in the HoA Region and elsewhere. There is also need to standardize the process and methods for conducting POSE for comparability.

DOI: 10.29245/2578-3009/2021/S2.1107 View / Download Pdf

Strategies to Reach Nomadic Children During Polio SIAs: Experience in Dadaab and Fafi Sub-Counties of Kenya after the 2013-2014 Polio Outbreak

Abdi H. Ahmed1*, Gedi Mohamed1, Joseph Okeibunor2, Iheoma Onuekwusi1, Pascal Mkanda2, Samuel Okiror3

1WHO, Nairobi Kenya

2WHO Regional Office for Africa (WHO AFRO), Brazzaville, Congo

3WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA


Poliomyelitis, often called polio is a viral paralytic disease caused by Polioviruses. Although all susceptible individuals are at risk of getting infected, only about 1% become paralyzed. During the 2013 Polio Outbreak in Garissa County in Kenya, 50% of the confirmed cases were from the nomadic population although it comprises of only less than 20% of the total population in the county. Following concerns from the Horn of Africa Polio Technical Advisory Group (TAG) regarding inadequate vaccine coverage of nomadic population, several strategies were put in place to improve coverage and Acute Flaccid Paralysis case reporting among nomads in the rest of the planned 2014 polio vaccination campaigns. We describe strategies initiated from April 2014 by the Ministry of Health and partners to reach children in nomadic settlements in the two sub-counties of Dadaab and Fafi of Garissa County.


The strategies involved improving the mapping and tracking of the nomadic population by establishing lists of nomadic settlements obtained from local clan leaders and government administrators, their <5-year-old populations and focal persons. Focal persons were used to mobilise residents in their respective settlements and guide vaccination teams during campaigns. Settlement leaders were sensitised to report cases of Acute Flaccid Paralysis. In remote hamlets, trained community health volunteers were used as vaccinators. In such places drugs for common illness were also provided during the campaigns. A tracking tool to monitor nomadic population movement and special tally sheets to capture data were created. Training of vaccination personnel and intense social mobilisation activities was done.

Results and conclusion

About 2,000 additional children, from both nomadic and non-nomadic areas were reached when the new initiatives were started. For the first time, an actual number of nomadic children accessed was documented. Suspected AFP cases continued to be reported from nomadic settlements, and the number of zero dose children among the nonpolio AFP cases dropped. With modification and improvement, these strategies may be used to take health services such as routine immunisation to nomadic communities and reduce their vulnerability to vaccine preventable disease outbreaks.

DOI: 10.29245/2578-3009/2021/S2.1110 View / Download Pdf

Lessons Learnt from Interregional and Interagency Collaboration in Polio Outbreak Response in the Horn of Africa

Samuel Okiror1*, Brigitte Toure2, Bob Davis3, Rustum Hydarov2, Bal Ram4, Joseph Okeibunor5, Chidiadi Nwogu1

1WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

2UNICEF, Nairobi Kenya

3American Red Cross, Nairobi Kenya

4CORE Group Regional Office Nairobi

5WHO Regional Office for Africa (WHO AFRO), Brazzaville, Congo

Following the outbreak of poliovirus in the countries in the Horn of Africa, Somalia, Kenya and Ethiopia, in two WHO regions, an outbreak response involving the WHO Africa and WHO East and Mediterranean Regions and partner agencies like the UNICEF in East and Southern African was developed. This paper documents response to polio virus outbreak in the Horn of Africa and the lessons learnt for the interregional and inter-agency collaboration on the response. This collaboration led to speedy interruption of the outbreak and within a period of one year the total virus load of 217 in 2013 was brought down to mere six. This resulted from collaborative planning and implementation of activities to boost the hitherto low immunity in the countries andimprove surveillance among others. A number of lesson were generated from the process. Some of the lessons is critical role such collaboration plays in ensuring simultaneous immunity boosting, information and resources sharing, among other. Some challenges were equally encountered, chiefly in the appropriation of authorities. In conclusion, however, one is safe to note that the collaboration was very fruitful given the timely interruption of transmission.

DOI: 10.29245/2578-3009/2021/S2.1112 View / Download Pdf

Establishment and Use of Polio Communication Network in Response to Polio in Outbreak Countries of the Horn of Africa: 2013–2014

Rustam Hydarav1, Obianuju Igweonu2*, Saumya Anand1, Mwakisha Jemimah3, Almaz Merdekios1, Leila Abrar1, Joseph Okeibunor4, Sam Okiror5

1UNICEF, Nairobi Kenya

2University of Nigeria, Nsukka

3WHO, Nairobi, Kenya

4WHO AFRO, Brazzaville, Congo

5WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

Background: Between 2013 and 2014, the Horn of Africa countries experienced a severe and prolonged outbreak of polio viruses. It started in one district in Somalia but quickly became a national and even international disaster, crossing international boundaries into Kenya and Ethiopia. This paper documents experiences in the establishment and contributions of the Polio Communication Network (PCN) to the polio outbreak response in the outbreak countries of Somalia, Kenya and Ethiopia from 2013 to 2015. Process: The establishment of the PCN network of partnerships and technical assistance was designed to implement a strategic communication response. Various strategies were used to establish the PCN. Some of these strategies included partnerships with faith-based organizations; involvement of local leaders in microplanning; social mobilization committees and research, monitoring, evaluation and documentation structures. Major Outcomes: PCN contributions through sustained high levels of community awareness of polio rounds were demonstrated. The contributions of the context-sensitive approaches included significant gains in reaching traditionally missed, hard-to-reach, pastoral communities with polio information, improved communication capacity, and successful closure of the outbreak within the expected timeline. This PCN experience provides important communication lessons relevant to polio eradication and other public health programmes. The focus on building capacity in areas such as monitoring, and data collection generated social data that led to the communication approaches making a significant impact. PCN contributed to a better understanding of the behavioral and environmental factors affecting the demand for, and uptake of, health services in the HoA which can be extended to most of the countries in the HoA with the same demographic and epidemiological realities. Conclusion: The use of the PCN helped bring the 2013-2014 polio outbreak under control and illustrates how the PCN can help drive progress towards the realization of the agenda of the universal health coverage and vision 2030 agenda in the African Region and elsewhere.

DOI: 10.29245/2578-3009/2021/S2.1117 View / Download Pdf

Implementation of Mobile Phone Data Collection in the Conduct EPI Comprehensive Review in East and Southern African Countries

Isah Mohammed Bello1*, Abubakar Sadiq Umar2, Godwin Ubong Akpan2, Joseph Okeibunor1, Chukwudi Shibeshi2, Messeret Eshetu1, Chakauya Jethro Magwati1, Teshager Fasil1, Daniel Fussum1, Richard Mihigo2, Pascal Mkanda2

1WHO East & Southern Africa Support Team (WHO ESA IST)
2WHO Regional Office for Africa (WHO AFRO)

Mobile phone data collection tools are increasingly becoming very usable collecting, collating and analysing data in the health sector. In this paper, we documented the experiences with mobile phone data collection, collation and analysis in 5 countries of the East and Southern African, using Open Data Kit (ODK), where questionnaires were designed and coded on an XML form, uploaded and data collected using Android-Based mobile phones, with a web-based system to monitor data in real-time during EPI comprehensive review. The ODK interface supports in real-time monitoring of the flow of data, detection of missing or incomplete data, coordinate location of all locations visited, embedded charts for basic analysis. It also minimized data quality errors at entry level with the use of validation codes and constraint developed into the checklist. These benefits, combined with the improvement that mobile phones offer over paper-based in terms of timeliness, data loss, collation, and real-time data collection, analysis and uploading difficulties, make mobile phone data collection a feasible method of data collection that needs to be further explored in the conduct of all surveys in the organization.

DOI: 10.29245/2578-3009/2021/S2.1108 View / Download Pdf

Vaccinations and Vaccinators’ Tracking System in Island Settlements: CHAD 2017-2018

Ajiri Atagbaza1*, Joseph Okeibunor1, Felix Amadou2, Souley Kalilou3, Aime Matela Esanga3, Adama Nanko Bagayoko3, Philbert Bohoussou3, Obianuju Igweonu4, Mahamat Mbodou Seid3, Ahmad Jibril Aliyu3, Elizabeth Benoit Ntezayabo5, Mohamed Alimou Traore6, Mwanza Nzioki1, Adebola Olaleye3, Adele Daleke Lisi Aluma7, Djibrine Abakar Sedick3, Adam Mahamat Seid3, Mahamat Saleh Tahir3, Narcisse de Medeiros8, Bakoly Rabenarivo9, Fabien Diomande10, Pascal Mkanda1

1WHO Regional Office for African (WHO AFRO), Brazzaville, Congo

2WHO Consultant Lake Chad

3Ministry of Health, Chad

4University of Nigeria, Nsukka

5WHO, Chad

6WHO Headquarters, Geneva

7Independent Consultant


9UNICEF, Cameroon

10CDC Atlanta

Introduction: Chad is a country within the Lake Chad sub region, currently at risk for poliovirus infection. The Lake Chad Task Team on polio eradication in this sub region made significant efforts to reduce the risk of polio transmission in Chad by tacking immunization teams in the Island Settlement using a Geographic Information System (GIS) technology. This article demonstrates the application of GIS technology to track vaccination teams to monitor immunization coverage in the Island settlements, reduce the number of missed settlements, to provide evidence for vaccination implementation and accountability and improve team performance.

Methods: In each district where tracking was conducted, global positioning system–enabled Android phones were given to each team on a daily basis and were used to record team tracks. These tracks were uploaded to a dashboard to show the level of coverage and identify areas missed by the teams.

Results: In 2018, tracking covered 30 immunization days, in six rounds. Approximately average of 1173 Island settlements were tracked and covered in each of the six rounds. A total of 806,999 persons aged 0-10 years were immunized, out of which 4273 were zero dose cases at the point of their immunization. Tracking activities were conducted. There was an improvement in the geographic coverage of settlements and an overall reduction in the number of missed settlements.

Conclusions: The tracking of vaccination teams and Island settlements ensured useful information for planning and implementation of polio campaigns and enabled supervisors to evaluate performance of vaccination teams

DOI: 10.29245/2578-3009/2021/S2.1116 View / Download Pdf

Auto Visual AFP Detection and Response (AVADAR) Improved Polio Surveillance in Lake Chad Polio Outbreak Priority Districts

Mamadou Diallo1*, Alimou Traore2, Myk Mwanza Nzioki1, Ayangma Richelot1, Kouryana Stephane3, Joseph Okeibunor1, Mkanda Pascal1, Samuel Okiror4, Johnson Ticha1

1WHO Regional Office for Africa (WHO AFRO), Brazzaville, Congo

2WHO Headquarters, Geneva

3WHO Chad

4WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

DOI: 10.29245/2578-3009/2021/S2.1101 View / Download Pdf

Response to Poliovirus Outbreaks in the Lake Chad Sub-Region: A GIS Mapping Approach

Atagbaza Ajiri1*, Joseph Okeibunor1, Samuel Aiyeoribe2, Benoit Ntezayabo3, Melinda Mailhot4, Mwanza Nzioki1, Alimou Traore4, Abdelrahim Khalid2, Mamadou Diallo1, Michel Ilboudo3, Bekele Mengistu Mikeyas1, Dhoud Samba5, Twite Mulunda6, Narcisse De Medeiros7, Bakoly Rabenarivo8, Fabien Diomande5, Sam Okiror9

1WHO Regional Office for African (WHO AFRO), Brazzaville, Congo

2EHealth Africa

3WHO, Chad

4WHO, Headquarters, Geneva

5CDC, Atlanta

6Mcking Consulting Corporation

7UNICEF, Dakar

8UNICEF, Cameroon

9WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

The geographic information system (GIS) mapping was used to improve the efficiency of vaccination teams. This paper documents the process in the deployment of geographical information system in response to polio eradication in Chad. It started with a careful review of government official documents as well as review of literature and online resources on Chad, which confirmed that official boundaries existed at two levels, namely Regions and Districts. All settlement locations in the target Districts were identified by manual feature extraction of high-resolution, recent satellite imagery, and map layers created for the following categories: hamlets, hamlet areas, small settlements, and built-up areas (BUAs). This clearly improved microplanning and provided valuable feedback in identifying missed settlements, leading to increased coverage and fewer missed children.

DOI: 10.29245/2578-3009/2021/S2.1115 View / Download Pdf

Efforts Towards Polio Eradication in Madagascar: 1997 to 2017

Marcellin Mengouo Nimpa1, Noëline Ravelomanana Razafiarivao2, Annick Robinson3, Mamy Randriatsarafara Fidiniaina4, Richter Razafindratsimandresy5, Yolande Vuo Masembe1, Christiane Ramonjisoa Bodohanta6, Isidore Koffi Kouadio1, Issa Kana kode Nyazy1, Moussa Simpore1, Charlotte Faty Ndiaye1, Joseph Chukwudi Okeibunor1.

1World Health Organization Regional Office for Africa, Congo

2Faculté de Médécine d’Anatanarivo, Madagascar

3Centre Hospitalier Universitaire Mère Enfant Tsaralalana (CHUMET) -Antananarivo

4Direction Centrale du Service Militaire d’Antanarivo

5Institut Pasteur de Madagascar

6Expanded Programme of Immunization, Madagascar

Background: In 1988, the World Health Assembly launched the Global Polio Eradication Initiative. WHO AFRO is close to achieve this goal with the last wild poliovirus detected in 2014 in Borno States in Nigeria. The certification of the WHO African Region requires that all the 47 member states meet the critical indicators for a polio free status. Madagascar started implementing polio eradication activities in 1996 and was declared polio free in June 2018 in Abuja. This study describes the progress achieved towards polio eradication activities in Madagascar from 1977- 2017 and highlights the remaining challenges to be addressed.

Methods: Data were collected from the national routine immunization services, Country Acute Flaccid surveillance databases and national reports of SIAS and Mop Up campaign. Country complete polio and immunization related documentation provided detailed historical information’s.

Results: From 1997 to 2017, Madagascar reported one wild poliovirus (WPV) outbreak and four circulating Vaccine Derived Polio Virus (cVDPV) oubreaks with a total of 21 polioviruses (1 WPV and 21 cVDPV). The last WPV and cVDPV were notified in 1997 in Antananarivo and 2015 in Sakaraha health districts respectively. Madagascar met the main polio surveillance indicators over the last ten years and made significant progress following the last cVDPV2 outbreak in 2014 -2015. In addition, the country successfully implemented the switch from trivalent Oral Polio Vaccine (tOPV) to bivalent Oral Polio vaccine (bOPV) and containment activities. Environmental Surveillance established since 2015 did not reveal any poliovirus. The administrative coverage of the 3rd dose of oral polio vaccine (OPV3) varied across the years from 55% in 1991 to a maximum of 95% in 2007 before a progressive decrease to 86% in 2017. The percentage of AFP cases with more than 3 doses of oral polio vaccines increased from 56% in 2014 to 88% in 2017. A total of 19 supplementary immunization activities (SIA) were conducted in Madagascar from 1997 to 2017, among which 3 were subnational immunization days (sNID) and 16 were national immunization days (NIDs). Poor routine coverage contributed to the occurrence of cVDPC outbreaks in the country; addressing this should remain a key priority for the country to maintain the polio free status.

From 2015 to June 2017, Madagascar achieved the required criteria leading to the acceptance of the country’s polio-free documentation in June 2018 by ARCC. However, continuous efforts will be needed to maintain a highly sensitive polio surveillance system with emphasis on security compromised areas. Finally strengthening the health system and governance at all levels will be necessary if these achievements are to be sustained.

Conclusions: High national political commitment and support of the Global Polio Eradication Partnership were critical for Madagascar to achieve polio free status. Socio-political instability, weakness of the health system, sub-optimal routine immunization performance, insufficient SIA quality and existing security compromised areas remain critical program challenges to address in order to maintaining the polio free status. Continuous high-level advocacy should be kept in order to ensure that new government authorities maintain polio eradication among the top priorities of the country.

DOI: 10.29245/2578-3009/2021/S2.1102 View / Download Pdf

Effectiveness of the Horn of Africa Polio Outbreak Coordination Office in Nairobi, Kenya

Samuel Okiror1*, Hemant Shukla2, Bob Davis3, Brigitte Toure4, Rustum Hydarov4, John Burton5, Subroto Mukherjee6, Bal Ram Bhui8, Mercy Lutukai8, Chidiadi Nwogu1, Joseph Okeibunor7

1WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

2WHO Headquarters, Geneva

3American Red Cross, Nairobi Kenya

4UNICEF, Nairobi Kenya

5UNHCR, Nairobi Kenya

6USAID Technical Officer

7WHO Regional Office for Africa, Brazzaville, Congo

8CORE Group Regional Office Nairobi

Background: The WPV1, first detected in Somalia in April 2013, quickly spread to Kenya and Ethiopia and triggered a multi-country coordinated effort. In February 2014, a formal HoA Polio Outbreak Coordination Office was established by WHO AFRO and WHO EMRO in Nairobi to provide technical and managerial leadership. An independent assessment was conducted to ascertain the usefulness of the HoA Coordination in response to the outbreaks.

Methods: The independent assessment team conducted desk review of the rules and guidelines forming the HoA Coordination office and committee. It also reviewed minutes of meetings and interviewed various stakeholders at the Regional levels.

Results: This independent review of the work of the office, in September 2016, showed that the office was fully functional and had benefited from financial and technical support from regional and global GPEI partners. The office is based in the WHO Kenya Country Office which also provides administrative, logistics and until August 2016, data management support. The close working relationship with technical partners ensured alignment and close coordination of outbreak response activities. The mechanism also allowed partners to identify areas of work based on their expertise and avoided duplication of efforts at the local level. Overall, the office was effective in close monitoring of implementation of the outbreak response, strengthening of cross-border activities, monitoring implementation of the TAG recommendations, improving SIA planning and quality, and expanding independent monitoring in Somalia and South Sudan. Key constraints included limited office space for day-to-day operations, and disruption of some activities due to interruption of contracts of technical staff. However, the closure of the HoA outbreak in August 2015 led to some complacency, resulting in a lost sense of urgency, negatively impacting the coordination.

Conclusions:The HoA Coordination Office should continue to function into the foreseeable future. To ensure sustainability of activities, the technical staff should be given contracts for a minimum of 12 months. The Office should re-introduce and schedule the Joint Polio Outbreak Response team meetings at least once every three months.

DOI: 10.29245/2578-3009/2021/S2.1114 View / Download Pdf

The Effect of Real Time Integrated Supportive Supervision Visits on the Performance of Health Workers in Zambia

Abubakar Sadiq Umar1*, Isah Mohammed Bello2, Joseph Chukwudi Okeibunor 1, Pascal Mkanda1, Godwin Ubong Akpan1, Daudi Manyanya2, Shibeshi Messeret Eshetu2, Masvikeni Brine2, Matapo Belem2, Masumbu Penelope2, Daniel Fussum2 

1WHO Regional Office for Africa (WHO AFRO)

2WHO East & Southern Africa Support Team (WHO ESA IST)

The use of online Integrated Supportive Supervision (ISS) is aimed to improve the quality of services provided by front line health workers. This work is aimed to document the effects of ISS on the performance of health workers in Zambia using selected key surveillance and immunization process indicators. ISS data on WHO ODK server of all Integrated Supportive Supervisory (ISS) visits that were conducted in Zambia between 1st January 2018 to 30th September 2018 were analysed to determine the Percentage point difference between the first and the most recent ISS visits in order to determine whether an observed gap during first ISS visit had persisted during the most recent ISS visit. Our study demonstrated that ISS has remarkable percentage point increase between the first and the most recent ISS visits on availability of an updated monitoring chart, health workers knowledge of AFP case definition and AFP case files. However, there exist variations in the frequency of ISS visits across the provinces of the country. Future research effort should consider assessing the quality of the ISS data through periodic data validation missions.

DOI: 10.29245/2578-3009/2021/S2.1109 View / Download Pdf

Polio Data Quality Improvement in the African Region

Bernard Ntsama1, Ado Bwaka2, Reggis Katsande3, Regis Maurin Obiang4, Daniel Rasheed Oyaole5, Pascal Mkanda5, Joseph Okeibunor5

1Data Manager, IST West Africa

2IVD/PEP Focal Point, IST West Africa

3Data Manager, AFRO

4Data Manager, IST Central Africa

5Data Manager, WHO Nigeria

The polio Eradication Initiative (PEI) is one of the most important public health interventions in Africa.  Quality data is necessary to monitor activities and key performance indicators and access year by year progress made. This process has been possible with a solid polio health information system that has been consolidated over the years.

This study describes the whole process to have data for decision making.  The main components are the data flow, the role of the different levels, data capture and tools, standards and codes, the data cleaning process, the integration of data from various sources, the introduction of innovative technologies, feedback and information products and capacity building. The results show the improvement in the timeliness of reporting data to the next level, the availability of quality data for analysis to monitor key surveillance performance indicators, the output of the data cleaning exercise pointing out data quality gaps, the integration of data from various sources to produce meaningful outputs and feedback for information dissemination.

From the review of the process, it is observed an improvement in the quality of polio data resulting from a well-defined information system with standardized tools and Standard Operating Procedures (SOPs) and the introduction of innovative technologies. However, there is room for improvement; for example, multiple data entries from the field to the surveillance unit and the laboratory. Innovative technologies are implemented for the time being in areas hard to reach due to the high cost of the investment. 

A strong information system has been put in place from the community level to the global level with a link between surveillance, laboratory and immunization coverage data. To maintain standards in Polio Information system, there is need for continuous training of the staff on areas of surveillance, information systems, data analysis and information sharing. The use of innovative technologies on web-based system and mobile devices with validation rules and information check will avoid multiple entries. 

DOI: 10.29245/2578-3009/2021/S2.1105 View / Download Pdf

Use of Call Centers in Polio Eradication Efforts in Island Settlement in Chad

Adele Daleke Lisi Aluma1*, Sam Koulmini2, Souley Kalilou2, Obianuju Igweonu3, Felix Amadou Kouassi4, Mohamed Alimou Traore2, Benoit Ntezayabo4, Laurel Zomahoun Delayo5, Aboubacar Barry2, Aime Matela Esanga2, Adama Nanko Bagayoko2, Don Jethro Mavungu Landu2, Abdel Aziz Kadai2, Bondoro Toyma2, Djibrine Abakar Sedick2, Penaling Nathei2, Daouda Mahamat2, Philbert Bohoussou2, Joseph Okeibunor6, Narcisse de Medeiros7, Bakoly Rabenarivo2, Fabien Diomande2, Sam Okiror8 

1Independent Consultant

2Ministry of Health Chad

3University of Nigeria, Nsukka

4WHO Chad

5WHO Headquarters, Geneva

6WHO Regional Office for Africa (WHO AFRO), Brazzaville, Congo

7UNICEF, Dakar

8WHO Horn of Africa Coordination Office (HOA), Nairobi KENYA

Background: One of the four key strategies of the Global Polio Eradication Initiative (GPEI) is high immunization coverage, with oral polio vaccine as part of routine immunization schedules. However, given the weak routine immunization structures in the African Region, coverage is enhanced with supplemental immunization activities (SIAs), and mop-up immunizations. Unfortunately, anecdotal information show that vaccination teams sometimes omit some catchments areas without immunization. This paper thus describes the use of “Call Centers” in detecting missed populations and taking prompt corrective action.

Method: The study was based on review of call records during polio supplemental immunization campaigns in Bol Districts in Chad from February to May 2018.  The immunization coverage resulting from these campaigns was compared with that of February 2018.  A compilation of data – details on communities, community leaders, and their phone numbers was performed. On the eve of the campaign, community leaders were alerted on the vaccinators’ visitThe community leaders were called on the eve of the campaign to alert them on the visit of the vaccinators. At the end of each day, activities (visits as well) were reviewed at the coordination centres Vaccinators were asked to return to any community where community leaders did not confirm visits).

Result: Telephone calls allowed the verification and confirmation of the vaccinators visits in 92% of cases. Villages where vaccination was planned but which were not reached were revisited. More than 1,011 children were caught up through this approach in 10 villages in the Bol district.

Conclusion: In conclusion, call centers played significantly higher role in generating covering more children with immunization during immunization campaign.

DOI: 10.29245/2578-3009/2021/S2.1113 View / Download Pdf

Surveillance Review System to Track Progress Towards Polio Eradication in the Horn of Africa

Samuel Okiror1*, John Ogange2, Hemant Shukla3, Christine Lamoureau4, Mwaka Monze5, Amina Ismail2, Anthony Kazoka6, Ben Nkowane3, Raoul Kamadjeu7, Obianuju Igweonu8, Joseph Okeibunor9, Chidiadi Nwogu1

1WHO Horn of Africa Coordination Office (HOA), Nairobi, Kenya

2World Health Organization, Kenya Country Office

3WHO Headquarters, Geneva

4Independent Consultant

5Polio Laboratory, Zambia

6World Health Organization, Tanzania Country Office

7UNICEF, New York

8University of Nigeria, Nsukka

9WHO Regional Office for Africa (WHO AFRO) Brazzaville, Congo

Background: The risk for importation and reintroduction wild poliovirus in areas that have been cleared of the wild poliovirus in the Horn of Africa will remain if the surveillance systems are weak and porous. Methods: Consequently, the Horn of Africa Polio Coordinating Office in Nairobi, together with partners conducted surveillance reviews for some of the countries in the Horn of Africa, especially Ethiopia, Kenya and Somalia to identify gaps in the polio surveillance and provided recommendations for improved surveillance. Structured questionnaires collected information about acute flaccid paralysis (AFP) surveillance resources, training, data monitoring, and supervision at provincial, district, and health facility levels. Other information collected included resource availability, management and monitoring of AFP surveillance.Results: The result revealed that although AFP surveillance systems were well established in these countries, a number of gaps and constraints existed. Widespread deficiencies and inefficient resource flow systems were observed and reported at all levels. There were also deficiencies related to provider knowledge, funding, training, and supervision, and were particularly evident at the health facility level. These weaknesses were corroborated with the sustained transmission of polioviruses in the region, where the surveillance systems were not sensitive enough to pick the viruses. Conclusion: The review teams made useful recommendations that led to strengthening of the surveillance systems in these countries, including the formation and use of village polio volunteers in the south and central zones of Somalia, where security was heavily compromised and surveillance officers lacked regular access to the communities.

DOI: 10.29245/2578-3009/2021/S2.1111 View / Download Pdf