PENNSYLVANIA – A “disease detective” from the Centers for Disease Control is in Pennsylvania this week to take a closer look at the measles outbreak.

According to the latest numbers from the Pennsylvania Department of Health, there are 1,286 measles cases, and the CDC wants to know why the outbreak is deadlier this time around.

The CDC said measles typically kills one to three of every 1,000 unvaccinated people it infects.

In the current outbreak here in Pennsylvania, the CDC said it’s already killed five people and possibly a sixth out of about 1,300 cases.

Researchers said they think it might have to do with age. Measles is usually considered a childhood disease, but health officials said two-thirds of cases in the state are adults.

In 1978, the CDC set a goal to eliminate measles from the United States by 1982. It was considered gone in 2000.

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