A tuberculosis exposure scare on the campus of Johns Hopkins Hospital prompted evacuations Thursday afternoon.
Two cancer research buildings on Jefferson Street were evacuated as Baltimore City fire crews assessed those who may have been exposed.
Hazmat crews were directed to an internal bridge between two cancer research buildings.
"There was a small tube that contained a frozen sample, and it was dropped and the lid came off while the sample was still frozen inside," said Dr. Landon King, executive vice dean of the Johns Hopkins School of Medicine.
According to Johns Hopkins Medicine officials, the amount of frozen tuberculosis released was the equivalent of a few drops. No one was hurt.
"In fact, we have determined that there is actually no risk, zero risk to anybody involved. So there is no preventive measure or testing required for anyone in the buildings as a result of this event," King said.
Hopkins has a large TB research facility, and the sample was going to be used for that purpose.
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