The varicella vaccine is highly effective and decreases chickenpox cases significantly. Chickenpox is contagious 1-2 days before you develop a rash and until all blisters crust over. If untreated, ...

On Wednesday, the World Health Organization declared mpox a public health emergency of international concern. There have been over 15,600 cases and over 530 deaths reported in the Democratic Republic ...

It all started with an unremarkable trip to grandma’s house in 1970. But two days into the visit, something went terribly wrong. The 9-month-old grandson fell ill. First, a fever. Then, a nasty rash.

LONDON (Reuters) - A virus closely related to smallpox disguises itself as a piece of a broken cell to trick its way into cells, Swiss researchers said on Thursday in a discovery that could lead to ...

Varicella-zoster virus (VZV) causes chickenpox and shingles, while herpes simplex virus (HSV) is responsible for oral and genital herpes. Although current treatments mainly focus on inhibiting viral ...

Health experts see his retreat from international cooperation as disrupting the safe-keepers of one of the world’s deadliest pathogens. By William J. Broad In 1999, William J. Broad and two colleagues ...