Received: 20 September 2022
Accepted: 25 October 2022
First Online: 9 November 2022
: The Benin National Ethical Committee at the BMoH approved the surveillance protocol as a less than minimal risk research, and written consent forms were not required. Oral consent was obtained from all patients included in this study. All methods including the use of human samples, were performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing financial interests. The supporting sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.