WASHINGTON — Researchers may have discovered the first U.S. cases of whooping cough caused by a germ that could be resistant to the vaccine, according to Fox News.
Health officials are trying whether cases like the ones found in Philadelphia could be a reason the nation just had its worst year for whooping cough in six decades, the article stated.
According to the article, a new study is suggesting that the new strain may be why more people have been getting sick; experts don't think it's more deadly, but the shots may not work as well against it.
The new germ was first identified in France, where more extensive testing is routinely done for whooping cough, and has accounted for 14 percent of cases there, the article noted.
Because doctors in the U.S. usually rely on a rapid test to help make a diagnosis, the extra lab work required to find the new strain isn't done often enough to determine how common it could be here, the article added.
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