Tornado damage to Pfizer plant will probably create long-term shortages of some drugs hospitals need

The fallout from a Pfizer factory being damaged by a tornado could put even more pressure on already-strained drug supplies at U.S. hospitals, experts say.

Wednesday's tornado touched down near Rocky Mount, North Carolina, and ripped up the roof of a Pfizer factory that makes nearly 25% of all sterile injectable medicines used in U.S. hospitals, according to the drugmaker.

Pfizer said all employees were safely evacuated and accounted for, and that it is still assessing damage.

Here’s a closer look at the possible effects.