They noted a large number of measles cases, mainly in the ranks of members of the ultra-Orthodox Jewish community.
"Vaccination is very important" Trump told reporters at the White House. "Everyone should receive a dose (vaccines), " he said.
In the United States, a record 695 cases of this disease have already been observed since the beginning of this year.
Several US public health institutions are trying to prevent the spread of this virus and the emergence of an epidemic of increased measles in the United States. For example, more than 200 students and employees at the University of California in Los Angeles (UCLA) and California State University (CAU) must be quarantined to suspect they can be smallpox.
They noted a large number of measles cases, mainly in the ranks of members of the ultra-Orthodox Jewish community. Many of them refuse vaccination, writes AFP.
According to the agency, the spread of measles can be a largely misinformation campaign by which parents refuse to vaccinate their children.
In the past, Trump expressed doubt about vaccine efficacy. In 2012 and 2014 on Twitter several times misrepresented the relationship of vaccination with childhood autism.