Tests Reduce Baby Strep, but Miss Cases

Testing pregnant women for group B strep bacteria has prevented many infections in babies. But the tests also missed more cases than expected, researchers say. U.S. health officials recommended in 2002 that all pregnant women be tested for group B. Usually group B doesn’t make adults sick. But it can cause serious illness in newborns. The program increased testing from 48% to 85% of pregnant women. Those who had group B in their bodies were given antibiotics to protect their babies. But about 60% of the newborns who did get infected were born to mothers who had been tested and found to be free of group B bacteria. Researchers now will try to find out why the bacteria were not detected in these women. The New England Journal of Medicine published the study. The Associated Press wrote about it June 18.