Harmless bruise? In the case of these signs, you should immediately to the doctor – Video
Blue spots, probably everyone knows – is a health hazard, someone can hardly see it. However, for some people it […]
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Since 2013, a new strain of meningococcal bacteria has spread rapidly in Niger and Nigeria, leading to large-scale outbreaks of […]
Two gene mutations transform harmless bacteria into a strain that could cause major epidemics
