San Diego County TB Program Announces Possible Exposure on Trolley’s Blue Line

The likelihood that any rider had long cumulative exposure is low, the county said.

A doctor examines the X-rays of a tuberculosis patient. Spencer Platt/Getty Images

SAN DIEGO — The county’s Tuberculosis Program is working with the Metropolitan Transit System to notify riders of the trolley’s Blue Line that they were potentially exposed to and are at risk for tuberculosis.

The exposure happened between Jan. 27 and Feb. 29 of this year, and the specific impacted routes are:

• The Blue Line between 24th Street Transit Center and Barrio Logan Transit Center, on Monday to Friday, on an inconsistent schedule but typically between 10:30 a.m. and 2:30 p.m. in the above time frame; and
• The Blue line between San Ysidro Transit Center and Old Town Transit Center roughly between 5 and 7 a.m., and from Old Town to San Ysidro between 6 and 7 p.m. on Friday, Feb. 16.

Since exposures occurred at inconsistent hours, the likelihood that any rider had long cumulative exposure times is low, according to the county. These exposures are not known to be associated with any previously reported exposures on the MTS system.