Good Morning Britain host Piers Morgan, 55, took to Twitter to tell fans he has tested negative for coronavirus after developing possible symptoms.The broadcaster has not appeared on the ITV show for two days running.Piers has since reacted to a social media user who accused him of not being an "essential key worker" as some vulnerable people around the UK have not been able to be tested.In a now deleted tweet, one frustrated follower wrote: "My daughter is a nurse - she's an essential worker."In view of his 7.4 million followers, Piers replied: "Your daughter is an infinitely more essential worker than me."I was drawing no equivalence, just explaining the Govt's designated all journalists & broadcasters covering the coronavirus crisis as.