Following a peak at week 51/2022, influenza activity had been decreasing across the Region until week 4/2023 before rising again to fluctuate around 25% positivity between weeks 6 and 11/2023 and decreasing again to 10% positivity in week 15/2023.
This issue of the CDTR covers the period 16-22 April 2023 and includes updates on influenza, avian influenza, Marburg virus disease, COVID-19 and poliomyelitis.