Public health workers are looking for two people who received by joint injection a suspect steroid linked with a nationwide fungal meningitis outbreak in people who received the drug by spinal injection.

Intervene MD of North Charleston and Mount Pleasant provided the injections to 335 people.

“Our staff continues to work with the physicians and staff of Intervene MD to contact the remaining patients,” said Jim Beasley, spokesman for the state Department of Health and Environmental Control.

The two patients who have not yet been located are among 78 people who received a joint injection of methylprednisolone acetate from three lots of the drug totaling 17,600 doses that the U.S. Food and Drug Administration is investigating for contamination. The FDA estimates that 14,000 people are at risk nationwide.

The Centers for Disease Control and Prevention on Friday reported 268 cases of fungal meningitis and three cases of fungal joint infections in a knee, hip, shoulder or elbow. Fungal meningitis linked to the tainted steroid has caused 21 deaths. No deaths have been associated with peripheral joint infections.

Read more in tomorrow’s print edition