Doctor Who and the Silurians
S7, E9: When the Silurian leader is killed, all hopes of peace are lost. The Silurian's infect Major Baker with a virus deadly to humans and release him to spread the infection.

S7, E9: When the Silurian leader is killed, all hopes of peace are lost. The Silurian's infect Major Baker with a virus deadly to humans and release him to spread the infection.