Measles outbreaks hit dozens of states

Babies too young to be vaccinated are among the most vulnerable as herd immunity thresholds are breached in several counties.

In Massachusetts, religious vaccine exemptions have hit a record high, further contributing to the spread of the disease.

The Trump administration has faced criticism for its handling of vaccine policy, with some officials reportedly pushing anti-vaccine experts in statehouses.

Public health experts are urging parents to ensure their children are up to date on their immunizations to prevent a wider national crisis.