2 people die from measles in Pennsylvania

Two people have died in Pennsylvania from measles, the state health department said Tuesday. Both were unvaccinated.

These the first deaths related to measles within the state in 35 years, according to the Pennsylvania Department of Health, and the first deaths reported this year in the U.S.

"My deepest sympathies are with the loved ones who are facing this unimaginable loss," Dr. Debra Bogen, the state's secretary of health, said in a statement. "Because measles was largely eliminated in the Commonwealth for more than three decades, people are not familiar with this disease and don't fully understand the potential severity of the illness."

In late July, the number of confirmed measles cases in the U.S. surpassed the total reported for all last year, according to data from the Centers for Disease Control and Prevention.

Last year's total of 2,289 was the highest number of recorded measles cases in more than 30 years, CDC data shows. However, the 2,777 total marks the highest number of cases recorded since 1991.

The CDC currently recommends that people receive two doses of the MMR vaccine, the first at ages 12 to 15 months and the second between 4 and 6 years old. One dose is 93% effective and two doses are 97% effective against measles, the CDC says.