News & Perspective

(CIDRAP News) – Because of a suboptimal match between this year's flu vaccine and circulating influenza B viruses, the World Health Organization (WHO) has recommended changing one of the three strains used in flu vaccines for the Northern Hemisphere next fall and winter.

(CIDRAP News) – Flu activity is increasing in many of the Northern Hemisphere's temperate-zone countries, with influenza B cocirculating with the 2009 pandemic H1N1 virus across Europe and teaming up with influenza A (H3N2) in the United States and Canada, the World Health Organization (WHO) said in its latest update.

(CIDRAP News) – Most measures of influenza activity in the United States continued their gradual decline last week, according to the Centers for Disease Control and Prevention (CDC), and similar trends were reported in Europe and other parts of the Northern Hemisphere.