People queue in line to receive PCR tests for coronavirus from a Community Testing Centre truck to tackle the spread of the virus and a pandemic wave near Hong Kong's financial district

covid coronavirus virus vaccine variant pcr pcr test testing test resident patient sickness covid19 worker healthcare protection safety pandemic cases positive cases policy negative positive number data record count case government community testing restrictions lockdown quarantine mass wave spread control prevention illness residents citizens face mask mask tent queue line queueing skyline high rise