There have been 258 placebo-controlled clinical trials of vaccines, according to a new research project. More than half of ...

A JAMA study published June 3 found that of 2,237 counties across the U.S., 78% reported declines in vaccination rates for ...

A medical officer at the US Centers for Disease Control and Prevention who was working on the committee that was weighing ...

Out of 2,066 counties studies, 1,614 counties, or 78%, reported drops in vaccinations. The average county-level vaccination ...

Most U.S. counties have seen a decline in measles, mumps and rubella (MMR) vaccination rates over the last five years, ...