Alternating patterns of seasonal influenza activity in the WHO European Region following the 2009 pandemic, 2010-2018.

ABSTRACT:

Background

Influenza virus infections are common and lead to substantial morbidity and mortality worldwide. We characterized the first eight influenza epidemics since the 2009 influenza pandemic by describing the distribution of viruses and epidemics temporally and geographically across the WHO European Region.

Methods

We retrospectively analyzed laboratory-confirmed influenza detections in ambulatory patients from sentinel sites. Data were aggregated by reporting entity and season (weeks 40-20) for 2010-2011 to 2017-2018. We explored geographical spread using correlation coefficients.

Results

There was variation in the regional influenza epidemics during the study period. Influenza A virus subtypes alternated in dominance, except for 2013-2014 during which both cocir

SUBMITTER: Mook P 

PROVIDER: S-EPMC7040975 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature