Weekly influenza update, week 7, February 2018
Influenza activity was widespread in the majority of reporting countries, with overall 51% of individuals sampled from primary healthcare testing positive for influenza. The detection rate decreased slightly compared to the previous week (53%). Both influenza virus types A and B were co-circulating with a higher proportion of type B viruses. Different proportions of circulating influenza virus types and A subtypes were observed between countries. The majority of severe cases admitted to non-ICU hospital wards were adults infected by influenza type B viruses. The majority of severe cases admitted to ICU were adults infected mostly by influenza type A viruses.
Download
Summary
Influenza activity was widespread in the majority of reporting countries, with overall 51% of individuals sampled from primary healthcare testing positive for influenza. The detection rate decreased slightly compared to the previous week (53%).
Both influenza virus types A and B were co-circulating with a higher proportion of type B viruses. Different proportions of circulating influenza virus types and A subtypes were observed between countries.
The majority of severe cases admitted to non-ICU hospital wards were adults infected by influenza type B viruses. The majority of severe cases admitted to ICU were adults infected mostly by influenza type A viruses.
