An enjoyable TV movie, if you can overcome the rather ridiculous premise.
A new disease is in danger of getting out of control. The only way to fight the disease is apparently to... travel back in time to Chicago 1871 where the disease once rose before but was successfully treated by a now long dead doctor. Earnshaw (Sam Groom) and Adams (Tom Hallick) are sent back in time. Unfortunately, there is a slight miscalculation and they are sent just days before the great Chicago fire which will destroy everything...
OK, you obviously will consider that if the US government possesses time travel technology you may wonder why a mere virus is now a problem. However, if you suspend enough disbelief than this is a fine little film.