Health H5N1 bird flu is closer to gaining pandemic potential than we thought The flu virus currently circulating in birds and dairy cows is already better at infecting people than earlier variants, and a single mutation would allow it to bind to key human receptors NewsFree
Health How many people died due to the Black Death in Europe? The history books say the infamous plague pandemic of the 14th century killed at least half of the population of Europe. But recent scientific investigations have called that figure into question FeaturesSubscriber-only