<P> By Day 26, the death toll had reached at least 2.5 million in the U.S. and 26 million worldwide . The discovery, production and initial deliveries of vaccine took until Day 133, with vaccinations to run until nearly Day 500 . The final death toll is not mentioned . </P> <P> Dr. Hextall places samples of MEV - 1 in cryogenic storage, alongside samples of H1N1 and SARS . </P> <P> The source of the virus is revealed to viewers . A bulldozer (coincidentally, operating for the company Emhoff worked for) clears some jungle and disturbs some bats, with one finding shelter and food in a banana tree . That bat then flies over a pig pen, dropping a chunk of banana from its mouth, which is then eaten by a piglet . A chef from the Macau casino chooses the piglet and returns to the casino . As he handles the carcass in the kitchen, getting abrasions on his hands, he only wipes his hands when called to meet a customer--Beth Emhoff . The chef shakes hands with Beth (Mitch views the handshake on her camera in a previous scene), giving her the mix of bat and pig viruses, making the chef patient zero and Beth the second case . </P> <Ul> <Li> Marion Cotillard as Dr. Leonora Orantes, an epidemiologist with the World Health Organisation </Li> </Ul>

Who is patient zero in the movie contagion