At present, the epidemic situation in Hong Kong is worsening continuously. According to the report of China Review News Agency (Hong Kong) on February 24, 2022, there were 8798 new confirmed COVID-19 cases in Hong Kong, reaching a new high since the epidemic onset. Worryingly, the fifth wave of the epidemic affected many residential care homes for the elderly and PWDs (people with disabilities), causing at least more than 80 staff members and the elderly in 42 homes infected.