The animated comedy "South Park" recently devoted an entire episode to them
Those who come to Britain from countries on the red list will be refused entry, while returning Britons must submit to 10 days of mandatory quarantine in hotels.
From 4 a.m. on April 9, Pakistan, Kenya, the Philippines and Bangladesh will be put on the list, the government said, joining about three dozen other nations mainly in Africa, the Middle East and South America.
There have been calls for the inclusion of some European countries where COVID-19 cases have surged, but the government has said it currently has no plans to do so.