The Epstein-Berr virus infects most of us – but why do only some get very ill?
Epstein-Barr virus is a very common infection, but that doesn’t make it harmlessScience History Images/Alamy…
Tag: infects
Bird flu infects a pig in the US, potentially raising risks to humans
Every time H5N1 infects a mammal, it has a chance to develop mutations that make…