More than 1400 years ago, Prophet Muhammad, peace be upon him, thought his followers hygiene practices that are still applicable in the 21st century.Islam is referred to as the religion of cleanliness. "Truly, God loves those who turn unto Him in repentance and loves those who purify themselves." (Quran 2:222)Infection control in Islam includes isolation and quarantine. Prophet Muhammad (PBUH) instituted strategies that are today implemented by public health authorities. He commanded his followers not to travel to places known to be afflicted with illness and he advised those in the contaminated areas or communities not to leave and spread the disease further afield. He said, "If you hear that there is a plague in a land, do not enter it; and if it (plague) visits a land while you are therein, do not go out of it".