Oklahoma faced a critical shortage of coronavirus testing agents on Wednesday as cases continued to mount, including the first child 4 years or younger and the first nursing home resident.

“Across the state, we are critically low on our test kits,” Gov. Kevin Stitt said at a news conference. “Or more specifically, the reagent. That's the fluid that goes into making the swab positive or negative.”

The state had the ability to test fewer than 100 people by Wednesday afternoon, Oklahoma Epidemiologist Laurence Burnsed said, and the state has not been told when to expect more.

Stitt said the Oklahoma State Health Department can now only test the most vulnerable people, including those with severe symptoms or those who have underlying conditions, particularly with their hearts and lungs. The governor said he was in constant touch with the White House about getting new tests and that Health Department officials were consulting with private labs.