A married woman (Gwyneth Paltrow) stops off
in Chicago on her way back from a business trip in Hong Kong to engage in extra
marital activities with an old boyfriend. When back home in Minneapolis she feels ill and believes she
has contracted a cold while away. It turns out to be something much more
serious though when she suffers a fit and is rushed to hospital. Unable to save
her, doctors inform her husband (Matt Damon) that she has passed away and
medical examiners begin tests to figure out what the deadly virus is. Meanwhile
people all over the world are contracting the virus and it soon becomes clear
that there is an epidemic on a global scale. WHO epidemiologist (Marion Cotillard)
travels to Hong Kong to try to find the source of the infection and Disease Control
boss (Laurence Fishburne) sends field agent (Kate Winslet) to Minneapolis to get a grip on events there. In
a final strand to the story, blogger (Jude Law) is informing millions of his
readers about Government cover-ups and conspiracies but has an agenda of his
own.