Common and highly contagious illnesses are reaching several-month highs. Norovirus has almost reached a several-year record.
Genetic analysis of H5N1 bird flu virus that infected a Canadian teenager shows 'worrisome' mutations, new studies reveal.
Four weeks after a puzzling outbreak was reported in the Democratic Republic of Congo, the World Health Organization has identified the cause.
The CDC is piloting a disease forecasting service called Insight Net. Could it be a game-changer for public health?