Two buildings on the campus of Johns Hopkins Hospital in Baltimore were evacuated because of a tuberculosis contamination.
Kim Hoppe, a spokeswoman with Johns Hopkins Medicine, told The Associated Press a small sample of frozen tuberculosis was “inadvertently released” in an internal bridge between two cancer research buildings. However, Hoppe said there was “no risk” of infection to any one on campus.
According to The Baltimore Sun, there were employees nearby when the contamination happened, but officials believe no one was exposed to the bacteria.
Dr. Landon King, executive vice dean of the Johns Hopkins University School of Medicine, told the Sun the sample was equal to a few drops.
Both buildings were closed for about four hours as firefighters and public safety officials checked to confirm it was safe to return.