Trump Wants the M.M.R. Vaccine Split Into Three Separate Shots. Doctors Say It’s a Bad Idea.

President Trump is calling for immunizations for measles, mumps and rubella to be given in individual jabs in three different appointments instead of the standard combination shot.There is no evidence that the combination shot for measles, mumps and rubella is dangerous or that splitting it into its three components is any safer or more effective, vaccine experts said.