Tuberculosis is an incredibly infectious and deadly disease.
According to WBAL, the incident involved a small vial of a frozen sample of tuberculosis being dropped onto the floor and having its lid fall off.
Hospital employees told 11 News that a fire alarm was pulled and they were subsequently told to evacuate 1501 Jefferson St.
But authorities later confirmed "that there was no risk to anyone on campus", Hoppe said.
Buildings at a Baltimore hospital were evacuated Thursday after employees were possibly exposed to tuberculosis, officials said.
In 2016, 10.4 million people around the world developed TB illness, and there were 1.7 million deaths, according to the US Centers for Disease Control and Prevention. In the U.S., however, it's steadily become a rarity. It's possible to be infected with TB without getting ill, in which case it can still be spread.
The building's air circulation systems were shut down shortly after the sample exposure to prevent the airborne disease from spreading, effectively isolating it.
Symptoms include coughing up blood, fever, chills, night sweats, shortness of breath, chest pains, weight loss and fatigue. Because of its knack for picking on the immunocompromised, TB is much more risky and occasionally fatal for people who also have HIV.
Because the buildings were used for research, no patients were in either building, according to the report. Two percent are extensively drug-resistant, meaning they can resist almost every available antibiotic in modern use.
Luckily, it seems, that's a scenario we won't have to worry about here.