The epidemic in Hong Kong has rebounded. For three consecutive days, the number of single-day confirmed cases has exceeded 2,000. Yesterday (30th), 2,318 new cases were confirmed, and another patient died.
There were 31 new cases of suspected BA.2.12.1 cases in Hong Kong; BA.4 or BA.5 cases also continued to rise, with 36 new suspected cases, among which seven more patients were added to the "Weishi Hotpot" group in Kwun Tong , and nine other local cases with no source found.
Au Ka-wing, chief physician of the Infectious Diseases Division of the Centre for Health Protection, pointed out that at least 63 local infections of BA.4 or BA.5 have been recorded in Hong Kong so far, and the number of local infections detected in the community has increased recently. It is inferred from the data that it has strong transmission power. The authorities expect BA.4 or BA.5 to become popular as in foreign countries. However, there is no evidence to show that the disease is more serious. The vaccine is also effective in preventing severe disease or death. When the exhibition is close Observe the situation.
Among the new cases, 2,156 were locally confirmed cases, including 761 positive nucleic acid tests and 1,404 confirmed positive rapid antigen tests, together with 153 imported cases, representing a total of 2,318 new confirmed cases.
Au Jiarong said that among the 2,318 newly confirmed cases, a total of 31 were suspected to be infected with the BA.2.12.1 variant virus branch. Among them, 19 patients had no source and involved various districts where they lived.
There were many cases of BA.2.12.1 in Shan Shan Village, Tuen Mun.
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Six variants of the virus confirmed to be linked to previous cases
The six cases are epidemiologically related to the previous case, involving different units in the same building. Some cases were found through mandatory testing. The patients included two residents from the same family in King Wah Building, Shan Shan Village. There was a case in one unit; in King On House in the same estate, there were also two cases in the same family. A forced inspection earlier in the building found confirmed cases in five units.
The remaining patients live in Lok Tsui House, Lok Fu Estate and Mei Leung House, Shek Kip Mei Estate respectively.
Suspected BA.4 or BA.5 cases increased by 36 in total, of which 19 were imported cases, of which six were local no-origin infections, and three involved family members of the patients.
The patient's residence involved 5 Changyi Buildings in Nanchang Village, Mingyu Building in Jianming Village and the second building of Xinducheng Phase II, and there were two patients in the same unit.
The residences of the remaining confirmed cases include Shui Lok House, Siu Sai Wan Estate, Chun Xuan House, Block A, Tsing Chun Court, Tsing Yi, and Hua Huan House, Tsing Wah Court, Tsing Yi.
The group of "Weishi Hotpot" continues to expand at Chuangye Street, Kwun Tong.
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The group of "Weishi Hotpot" in Chuangye Street, Kwun Tong continued to expand. Eight cases were related to the previous cases. Among them, seven patients visited on the evening of the 24th of last month. The authorities issued a forced inspection notice yesterday. A total of 11 cases were found that night, involving eight men and three women, who developed symptoms from the 26th to the 30th of last month, and were aged between 34 and 56 years old.
Au Ka-wing pointed out that the authorities have obtained customer information through the vaccine passport and inspected the hygiene conditions in the restaurant, and will follow up on the test results of the relevant persons.
In addition, all employees have been required to undergo nucleic acid testing and comprehensive cleaning.
The remaining case is a related case involving the same unit in Cambridge Building.
BA.4 or BA.5 local cases mainly involve family groups
Au Jiarong concluded that at least 63 local infections of BA.4 or BA.5 have been recorded in Hong Kong, of which six are related to airports and quarantine hotels; the other six are epidemiologically related to workers in high-risk places, mainly due to their Family members; 7 cases are related to imported cases; 20 cases are without source, and 24 cases are related to 20 cases without source, mainly involving family groups, or several confirmed cases in the same family.
Au Jiarong mentioned that among the above-mentioned cases, the Po Leung Kuk Zhou Hung Biu Day Care Centre for the Elderly and Kwun Tong's "Hot Pot" may be involved in transmission.
He also mentioned that most patients with BA.4 or BA.5 have mild symptoms, some of them are asymptomatic, and those with symptoms involve mild symptoms of upper respiratory tract, similar to BA.2, BA.2.12.1, etc. There is no need to go to the ICU or die, and the authorities do not yet know the percentage of people who are asymptomatic.
As for the regional distribution, it has not yet been concentrated in a single region. Au Jiarong pointed out that the results of genetic analysis found that most of the BA.4 or BA.5 cases that have appeared locally in recent days are related to BA.5, but the whole gene sequence is not the same. Similarly, it is estimated that there is no single source, so it is not a single dissemination.
No scientific evidence that BA.4 or BA.5 is more severe than Omicron
When asked whether the continued increase of BA.4 or BA.5 cases will become mainstream, Au Jiarong said that the number of local infection cases detected in the community has increased recently, and nearly half of them have not been able to trace the source, nor are they related to imported cases or high risk Concerning site staff, latent transmission is estimated to occur in different areas of the community, and the authorities will closely monitor the distribution of this new branch and its percentage of overall cases.
He continued that BA.4 or BA.5 may account for an increase in the proportion of cases.
He also said that according to WHO data, this branch may have stronger transmission power than BA1 or BA2, which will increase the risk of transmission, and it may also become popular like foreign countries. The severity and impact of pathogenicity are greater than those of other Omicron viruses. According to the hospital admission rates and mortality rates in other countries, the conditions of the patients are similar, and the vaccines are effective in preventing severe illness or death in BA.4 or BA.5.
He said that it remains to be seen whether it will become mainstream, and now he hopes to take strict measures to send previous cases and their families to isolation and quarantine.
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