Monkeys are the main antagonists In the horror film 28 Days Later. There are Monkeys who are used as hosts for the Rage virus before they create the Infected humans.
Role in 28 Days Later
The monkeys were visited by an animal rights group, who were informed by the late Dr. Warren of the experiment and how bad it was. The group didn't know of the virus they only believed the scientists were evil and abusing animals. They were soon accosted by Dr. Clive who was scared but he tried to tell them of the virus. The activists didn't listen, and, determined to open the cages, they released a screaming monkey out who bit a woman. This started the Rage virus outbreak. The monkey who escaped was killed by Dr. Clive, but others broke out and escaped into Cambridge city, according to the comics.
- No infected animals other than the infected chimpanzees are ever seen in the 28 Days Later franchise. According to Danny Boyle, this is because primates are the only animals that are capable of carrying the Rage Virus as hosts. This is further supported by the fact that no infected animals other than chimps have been seen, and the fact that Infection is a strain of Ebola, which infects primates. Also, in 28 Days Later, a crow was shown to be pecking at an infected soldier's corpse, and did not appear to become infected from consuming the corpse's blood which was carrying the Virus.