Shaun of the Dead is a 2004 British zombie-apocalypse comedy, directed by Edgar Wright.
Pegg and Frost reunited for Thursday's brief video "The Plan" and discussed by phone the importance of checking in on loved ones, following the medical advice of government agencies and avoiding other people and public places.
"If you can, stay at home, have a cup of tea and wait for all this to blow over," Pegg said.
"We're all in this together. Don't be selfish. Look after each other. Give someone a call if you think they might be lonely."