And yesterday, the State Legislature approved a bill eliminating religious and nonmedical exemptions for immunizations. Gov. Andrew M. Cuomo immediately signed it into law.

[Read more about yesterday’s vote to ban certain exemptions to vaccinations.]

Anti-vaccination fervor has also come from the left, and health authorities fear the outbreak could move to groups that include students at progressive private schools that are part of the Waldorf educational movement.

[Read more about the anti-vaccine movement: 60 percent of the 300 students at one Waldorf school were not vaccinated against measles and other diseases.]

Here’s the latest on the measles outbreak:

How many cases of measles has New York City had?

As of June 10, 588 cases were confirmed since September, according to the city’s Department of Health.