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Black Death plagued humans since Bronze Age

It turns out the plague was plaguing humans far earlier than previously believed.New research using ancient DNA has revealed that plague has been endemic in human populations for more than twice as long as previously thought and that the ancestral plague would have been predominantly spread by human-to-human contact, until genetic mutations allowed Yersinia pestis (Y. pestis), the bacteria that causes plague, to survive in the gut of fleas.

Infectious diseases killed 1,433 in China in September

 A total of 1,433 people died from infectious diseases in China in September, with HIV/AIDS the top cause of death, according to figures released by the health authority on Saturday.