Vaccines are safe, but shots can sometimes leave a child feeling sore and fussy for a day or two. Here's what to do.

The incidence of adverse events was similar in the four groups. A yellow fever vaccination dose as low as 500 IU was noninferior to the standard dose of 13,803 IU for producing seroconversion ...

The WHO advises using fractional doses of the 17D yellow fever vaccine when outbreaks occur during vaccine shortages, but evidence on the immunogenicity of these lower doses is limited.

The UK Health Security Agency has issued an alert after an individual travelled to England while they were unwell with Lassa fever. The disease is a zoonotic disease, meaning that humans become ...