The CDC is calling for expanded testing of bird flu after a child in California tested positive for the virus despite no known contact with animals.

The CDC advises testing hospitalized flu patients for bird flu within 24 hours to prevent delays in identifying human infections. While the public risk remains low, nearly 70 Americans have contracted bird flu.

Also in Health Watch, a new study says drinking a small glass of wine a day may actually protect your heart, and the CDC says anyone over 50 should get the pneumococcal vaccine.

The agency is advising enhanced safety measures in Minnesota and South Dakota, where turkey flocks with more than 500 birds should be isolated, monitored and tested for bird flu within 72 hours before going to slaughter,