Prince William County cafeterias are not selling milk this week, after workers reported some spoiled containers of milk.

School officials notified Newport News-based Marva Maid Dairy about the spoiled half-pint containers of milk on May 23, according to a letter sent home to families on Monday. They initially thought it was an isolated incident but later learned about problems in Henrico County with the same supplier.

In Henrico, some students reported experiencing “nausea-like symptoms” after drinking milk that was later determined to be spoiled.

Amber Sheridan, a spokeswoman for Marva Maid, said the dairy is working with the state health department to “figure out if there is a reason to explain the spoilage.”

She said the company issued a voluntary recall for any half-pint containers that have a printed expiration date between May 30 and June 2.

In Prince William, students are being served juice instead of milk this week, as school nutrition and county health officials work together to investigate the issue.

“We will continue this practice until we can be assured of the safety of the products delivered or, if necessary, until alternate supplies can be obtained,” Serena Suthers, director of School Food and Nutrition Services, said in the letter.

Suthers said parents should feel free to pack milk for their children to drink at lunch.