Scarlet fever and smallpox had higher mortality rates, and the ubiquity of measles meant that contracting it was almost a rite of passage. (The word measly is derived from the virus, Adam Ratner noted ...

Known as Oropouche virus, it can trigger a fever that may cause pregnant people to miscarry or their babies to have birth defects known as microcephaly, or smaller than usual heads. “Case ...