The battle to quell the devastating outbreak has been complicated by a vocal anti-vaccination movement, officials say.

The province says the number of children fully immunized against measles rose by 37,525 between April and June as part of a catch-up program.

The 2019 East Coast Games are being held in the Saint John area, which has had 12 confirmed cases of measles recently.

The number of U.S. measles cases is now the highest it's been since 1992.

Dr. Jennifer Russell, the chief medical officer of health, says there was some confusion about whether there were four cases after the New Brunswick Community College recently reported a suspected case her office was already investigating.

The province says there have been 29 verified cases of measles in B.C. since the start of the year.

Island Health says there is low risk, as the patient was travelling during their infectious period.

Dr. Theresa Tam said Friday in Ottawa that bots have been spreading false claims about vaccinations and increasing tensions on the issue.

A quarantine at two Los Angeles universities affected more than 200 students and staff who may have been exposed to measles and either have not been vaccinated or cannot verify that they are immune.

New York City health officials on Wednesday reported 61 new cases since late last week, pushing this year’s nationwide tally past the 667 cases reported for all of 2014.