Japan's top coronavirus adviser Shigeru Omi said Sunday it is time to start considering further shortening the quarantine period for people who have been in close contact with COVID-19 patients.Omi suggested the time for isolation, currently seven days for ordinary people and five days for essential workers, could be cut as the Omicron variant of the virus is known to have a shorter incubation period."I think it's time to start a discussion to make it more flexible," Omi said during an NHK television program.For more than a month, Japan has been struggling to tackle another wave of COVID-19…READ FULL ARTICLE