Common cold

The common cold was a virus, frequently contracted by Humans.

Henry van Statten found the cure for the common cold in a crater. However, he chose not to market it as he could make more money from repeatedly selling duds. (DW: Dalek)

Dodo Chaplet nearly wiped out the inhabitants of the Ark when she passed it onto them, as they had no immunity to the infection. (DW: The Ark)