India, Aug. 13 -- The head of the World Health Organization has upheld the safety of childhood vaccines in response to a new directive from the White House to overhaul the recommended inoculation schedule.

On Monday, President Donald Trump signed an executive order that calls for reducing the number of routine childhood immunizations from 18 to 11.

The administration's Gold Standard Childhood Vaccine Recommendations also advocate for separating the combined measles, mumps and rubella vaccine into three single-disease shots that would be administered during separate medical appointments.

The policy also aims to improve vaccine research and to maximize parental choice over which shots their children receive by ensuring state compliance wit...