Omoleke Semeeh Akinwale, Ajibola Olumide, Ajiboye Jubilee Odunola, Raji Rilwan Olaolu
Immunisation, Vaccines and Emergencies Unit, World Health Organisation, Birnin Kebbi, Kebbi State Field Office, Nigeria.
Department of Microbiology, Federal University, Birnin Kebbi, Kebbi State, Nigeria.
BMJ Glob Health. 2018 Feb 15;3(1):e000659. doi: 10.1136/bmjgh-2017-000659. eCollection 2018.