With reports of the first human death from bird flu in the US, some Americans are feeling an uncomfortable flashback to the early days of Covid-19.

It's a respiratory illness that may start out like a cold. But pertussis, also known as whooping cough, can last for weeks or months.

"The reality is that things have gotten much worse since then," she said. "Absence of evidence is not evidence of absence." ...

A new study tracked thousands of gay men taking PrEP and DoxyPEP.  A new study tracked thousands of gay men taking PrEP and ...