Unusually high impact of influenza B during the early 2012–2013 influenza season in Wales – epidemiology and clinical analysis of the first 100 cases

摘要

BackgroundInfluenza B is often regarded as the milder form of the disease. The early 2012–2013 season in Wales saw the highest rate of influenza B‐associated primary care consultations since 1994–1995 and considerable hospitalisations.