landing in hong kong, chan was in an ambulance. his luggage left at the airport. he tested positive for the omicron variant. even without symptoms, his minimum hospital stay is nearly a month. do you worry about your mental health as these days turn into weeks? yeah, absolutely because i ve never been in a situation like this before. in general there is increased sense of isolation, anxiety, and in some severe cases, even posttraumatic stress. reporter: hong kong psychiatrist dr. elizabeth wong says longer quarantines can be traumatic. we have a lot of changes between the 7 days, 14 days, 21 days. that was before they were reporting stress, especially with longer period of quarantine. reporter: darrell s day begins with a wake up jingle. attention, please. reporter: he takes his own vitals. calls and messages with friends