California H5N1 outbreaks have had little impact on overall milk production, but experts warn that outbreaks could soon increase substantially.

STAT recently spoke to Erica Pan, California’s state epidemiologist, about what public health officials are doing to monitor for human H5N1 infections. The conversation, which took place before California announced its human cases, has been lightly edited for clarity and length.

A third farmworker has tested positive for bird flu in California, according to the state’s health department. If confirmed by the US Centers for Disease Control and Prevention, this would be the 17th human case of H5N1 flu in the US since March,