Norman — Measles are apparently making a comeback in the United States. More than 300 cases have been reported since January, easily reaching a 20-year high.
In the first five months of this year alone, 307 cases have been reported.
The Associated Press reported that nearly all of the cases have been linked to travelers who caught the virus abroad and spread it among unvaccinated people when they returned to the United States.
Many of those unvaccinated skipped shots for personal or philosophical reasons.
The virus is highly contagious and spreads easily through the air and in close quarters.
Many of those infected travelers had been to the Philippines, where a recent measles epidemic has caused more than 30,000 illnesses.