Rabies is an infection of the brain and nerves, usually caught from the bite or scratch of an infected animal. All mammals (including monkeys) can carry rabies, but it's most common in:
The infection is often fatal once symptoms appear but treatment before this happens is much more effective.
To prevent the risk of catching the infection, it is recommended you get vaccinated if you are staying in one of Asia, Africa, Central or South America for more than a month or carrying out any outdoor activities while you are there.