California health officials are warning not to drink another lot of raw milk from Fresno-based Raw Farm after it tested positive for bird flu virus. More testing of Raw Farm products is underway, the state said.

California health officials announced Wednesday that another batch of raw milk from Fresno-based Raw Farm has tested positive for bird flu virus, as dairy farms throughout the state continue to struggle with a widening number of outbreaks.

A recall is underway for a second batch of raw milk due to the detection of the bird flu virus, health officials said. Pasteurized milk is still safe to drink.