09:32Science In ActionWhy are Covid-19 cases rising in Hong Kong?BBC World Service Duration: 30 minutes Fri 11th Mar 2022, 09:32 on BBC World Service OnlineAvailable for over a yearListen nowThe territory is experiencing a rapid increase in infections and deaths. Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandScience In Action Source: BBC Online