You can get tested to see if you're immune to measles, but you might as well get the shot, says CDC

Shot might cost less than lab test

Chris Miller
April 19, 2019 - 8:32 am

Getty Images--Jeffrey Hamilton

Do you worry that the measles vaccine you got when you were a kid has worn off? Some companies are offering to blood-test people to see if they're still immune -- for a fee, of course. Is that really necessary?

One company claims even if you were vaccinated as a child, your immunity could have worn off. The CDC disagrees, says Dr. Fred Lopez, infectious disease expert at LSU Health New Orleans.

"Just receiving one dose of measles-containing vaccine is considered being immune from the measles by the CDC," said Dr. Lopez. "It's very, very immunogenic. In other words, very effective. One dose is about 93 percent effective in producing immunity, two doses is 97 percent."

And most Americans have had two -- as babies, and again as pre-schoolers. 

Dr. Lopez says there is a small chance that your vaccine didn't take -- the CDC says it happens about three percent of the time. 

So if you're worried you're in that three percent, or you don't know if you got the shots as a child and can't find your medical reecords, go ahead and get tested, or better yet, the CDC recommends getting the shots -- it will probably cost less than lab tests.

For more information about this story, click the link.  https://www.cdc.gov/measles/about/faqs.html#immunity

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