In the Middle Ages, a plague killed a third of Europe's population. Fleas carried the plague bacterium, Yersinia pestis, ...
Growing up can be hard, but Zoey Moss, daughter of new children’s book author Morgan Moss, knows it can be even harder with ...
A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.
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