Shenzhen saw a new asymptomatic case of COVID-19 on Dec. 2, which proved to be a close contact of a case, who was found to be a truck driver shuttling between Shenzhen and Hong Kong that emerged the day before.
To meet the requirement that "all should be tested must be tested" and that further epidemiological surveys and screening for potential risks should be carried out, residents in the neighborhood of the Luofang Aquatic Products Market must receive nucleic acid tests from Aug. 15.
The 50.4 percent efficacy rate for the COVID-19 vaccine candidate made by China's Sinovac Biotech is only accurate under the most stringent testing settings.
A study by Chinese researchers has found that the novel coronavirus has much weaker infectivity at high body temperatures, which suggests fever may significantly improve COVID-19 progression and prognosis, Science and Technology Daily reported.
China is administering COVID-19 vaccines to key groups across the country, with Beijing slated to complete the inoculation for key groups before the Spring Festival, which falls on Feb. 12 this year.