Open AccessInfluenza activity in the Southern Hemisphere: a preliminary look at the winter 2007 season
Author(s) -
Collective Editorial team
Publication year - 2007
Language(s) - English
Resource type - Journals
ISSN - 9999-1233
DOI - 10.2807/esw.12.34.03256-en
Subject(s) - southern hemisphere , northern hemisphere , winter season , flu season , geography , western hemisphere , seasonal influenza , climatology , human influenza , physical geography , biology , covid-19 , ecology , virology , vaccination , medicine , infectious disease (medical specialty) , disease , economic geography , geology , pathology
Human seasonal influenza occurs in the northern and southern hemispheres in epidemics in the colder months of the year. These vary annually in their mix of viruses (which constantly evolve), the severity of the illness and the ‘fit’ with the vaccine composition, which is reviewed annually by the World Health Organization (WHO) for each hemisphere.