HONG KONG, July 13 (Xinhua) -- Hong Kong's Center for Health Protection (CHP) reported Monday 41 local infections of COVID-19, a new high since the COVID-19 outbreak.
Of the new local infections, the transmission chains of 20 cases were still unclear and 21 cases were related to patients diagnosed previously, the CHP said at a press conference. Taking account of 11 imported cases, the COVID-19 tally in Hong Kong rose to 1,521.
Chuang Shuk-kwan, head of the CHP's Communicable Disease Branch, said the epidemic situation was grave as cases with unknown sources increased every day and warned that there may be more such cases in the community.
The CHP noted that numerous new cases were related to restaurants and thus urged residents to avoid meal gatherings and keep social distancing.
Hong Kong witnessed a resurgence of COVID-19 cases over the past weeks after some control and preventive measures were eased to revive the economy and let residents resume normal lives.
The government has in response tightened social distancing measures again, such as resuming the cap on the number of customers in a restaurant and allowing schools to begin summer vacation earlier.
The Hong Kong Trade Development Council (HKTDC) decided to postpone four upcoming public events on Monday, including a week-long book fair starting Wednesday, a sports and leisure expo and an education and careers expo.
The HKTDC said it will likely be difficult to perform contact tracing and imposing subsequent disease control measures for the expected huge number of visitors in the events. The book fair in 2019 attracted nearly 1 million visitors.
At the press conference, Chuang said the government is closely tracking the developments of the epidemic and will carry out further anti-epidemic measures as soon as possible when necessary.