Contagion ending explained (spoilers)

[ahmedsfriend]

A vaccine is discovered around day 16. However the discovery, production and initial deliveries of vaccine took until Day 133. The final death toll is not mentioned.
Dr. Hextall places samples of MEV-1 in cryogenic storage. The source of the virus is revealed. And shows a digger clears some jungle and disturbs some bats, with one finding shelter and food in a banana tree. The bat then flies over a pig pen, dropping the food from its mouth, which is then eaten by a piglet. A chef chooses the piglet and returns to the casino where he works. As he handles the pig in the kitchen, getting cuts on his hands, he doesn't wash his hands called to meet a customer who turns out to be Beth. The chef shakes hands with her giving her the mix of bat and pig viruses, making the chef ground zero and Beth the second case of the virus.