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Progress Toward Poliomyelitis Eradication - Nigeria, January 2018-May 2019.
- Source :
-
MMWR. Morbidity and mortality weekly report [MMWR Morb Mortal Wkly Rep] 2019 Jul 26; Vol. 68 (29), pp. 642-646. Date of Electronic Publication: 2019 Jul 26. - Publication Year :
- 2019
-
Abstract
- The number of wild poliovirus (WPV) cases in Nigeria decreased from 1,122 in 2006 to six WPV type 1 (WPV1) in 2014 (1). During August 2014-July 2016, no WPV cases were detected; during August-September 2016, four cases were reported in Borno State. An insurgency in northeastern Nigeria had resulted in 468,800 children aged <5 years deprived of health services in Borno by 2016. Military activities in mid-2016 freed isolated families to travel to camps, where the four WPV1 cases were detected. Oral poliovirus vaccine (OPV) campaigns were intensified during August 2016-December 2017; since October 2016, no WPV has been detected (2). Vaccination activities in insurgent-held areas are conducted by security forces; however, 60,000 unvaccinated children remain in unreached settlements. Since 2018, circulating vaccine-derived poliovirus type 2 (cVDPV2) has emerged and spread from Nigeria to Niger and Cameroon; outbreak responses to date have not interrupted transmission. This report describes progress in Nigeria polio eradication activities during January 2018-May 2019 and updates the previous report (2). Interruption of cVDPV2 transmission in Nigeria will need increased efforts to improve campaign quality and include insurgent-held areas. Progress in surveillance and immunization activities will continue to be reviewed, potentially allowing certification of interruption of WPV transmission in Africa in 2020.<br />Competing Interests: All authors have completed and submitted the ICMJE form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
- Subjects :
- Adolescent
Child
Child, Preschool
Disease Outbreaks statistics & numerical data
Humans
Immunization Programs
Infant
Nigeria epidemiology
Poliomyelitis epidemiology
Poliovirus genetics
Poliovirus isolation & purification
Poliovirus Vaccines administration & dosage
Program Evaluation
Serogroup
Violence
Disease Eradication
Disease Outbreaks prevention & control
Poliomyelitis prevention & control
Population Surveillance
Subjects
Details
- Language :
- English
- ISSN :
- 1545-861X
- Volume :
- 68
- Issue :
- 29
- Database :
- MEDLINE
- Journal :
- MMWR. Morbidity and mortality weekly report
- Publication Type :
- Academic Journal
- Accession number :
- 31344023
- Full Text :
- https://doi.org/10.15585/mmwr.mm6829a3