Influenza Virological Surveillance in the WHO African Region, Epidemiological Week 40, 2017
During epidemiological week 40, 15 laboratories (Burkina Faso, Cameroon, Central African Republic, Cote d’Ivoire, Democratic Republic of Congo, Ethiopia, Ghana, Madagascar, Mali, Mauritania, Mauritius, Senegal, Sierra Leone, South Africa and Zambia) in the African region influenza laboratory network contributed data for analysis. During week 40,111 specimens were positive for influenza out of the 512 that were tested (22% positivity rate). Influenza types and subtypes identified were influenza A/H3 ( 40/111, 36%), influenzaA/H1N1pdm09 (47/111, 42%) and influenza B (24/111, 22%).
Cumulatively* from epidemiological week 1 to 40 the AFR influenza laboratory network has collected over 27,600 specimens and tested 26,576, of which 3,857 have been positive for influenza virus (positivity rate 15%).
* adjusted for retrospective data .