U.S. poultry producers should ramp up testing and monitoring of turkeys for bird flu before they are slaughtered to ensure the virus stays out of the food supply, the U.S. Department of Agriculture said on Friday.

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.

A group that advocates for animal rights says the US Government needs to do more to stop the spread of bird flu or H5N1. More than 100 million birds have been affected according to the CDC and over 1 million birds have been euthanized in the United States due to bird flu.