Received: 19 May 2020
Accepted: 13 September 2020
First Online: 3 October 2020
Ethics approval and consent to participate
: Permission to conduct the study was obtained from the hospital authorities of Burkina Faso, and informed verbal consent was obtained from the parents/guardians of every child before sample collection. The National Ethical Committee (s) of Burkina Faso (N ° 2009-39) approved the study protocol.
: Not applicable.
: The authors declare that they have no competing interests.