Last Monday, Sansum Clinic sent letters to 630 of its patients warning a sick worker may have exposed them to tuberculosis.
The letters, signed by Assistant Medical Director Marjorie Newman, explain a staff member at the healthcare provider's Internal Medicine Department at 215 Pesetas Lane was recently diagnosed with the disease.
Though the risk of exposure is "very minimal," Newman wrote, patients who visited the department between mid-February and May 21 should be tested. Infection can occur when a person with active TB in their lungs coughs or sneezes and expels bacteria into the air.