(WHTM) — Pennsylvania’s dairy industry was granted HPAI-free status after thousands of milk samples were tested within the past months.

With the HPAI-free designation, that means that the state’s milk supply has been tested adequately to rule out bird flu in cattle.

“Pennsylvania’s food supply is safe and secure, due to a unified, aggressive, and effective response strategy,” Agriculture Secretary Russell Redding said. “We are not out of the woods yet, and the threat demands that we keep our guard up. But strategic, commonsense investments by the Shapiro Administration, combined with critical partnerships among our state and federal interagency team and every level of our dairy and poultry industries have made a very real difference in minimizing the impact of the most devastating agriculture emergency in U.S. history.”

More than 22,000 bulk milk samples from 4,784 dairy farms in the state have been tested since Pennsylvania began testing samples in November, finding no trace of bird flu, according to a news release.

More than two million domestic birds in Pennsylvania have been impacted by bird flu, including six backyard flocks and six commercial flocks. There have been no bird flu infections in cattle or humans to date, the release states.

Pennsylvania is under a general quarantine to protect the poultry industry from the spread of the virus