1918 Flu
Clip: Season 6 | 12m 33s
A virus that killed up to 50 million people is revived to decipher its deadliness
Aired: 11/01/12
Problems Playing Video? | Closed Captioning
Clip: Season 6 | 12m 33s
A virus that killed up to 50 million people is revived to decipher its deadliness
Aired: 11/01/12
Problems Playing Video? | Closed Captioning