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Written by: Zheng Cuibi
2020-10-30 10:24
Last update date: 2020-10-30 10:24
The new crown pneumonia epidemic is not over. There were three new confirmed cases in Hong Kong yesterday. One of them was a local infection. The patient was a 50-year-old woman. Her colleague (42-year-old man) had been diagnosed earlier, but no female quarantine was arranged. The Department of Health explained that it did not classify women as close contacts.
Respiratory system specialist Liang Zichao said on a radio program today (30th) that this case reflects the risk of an outbreak at the workplace and also shows the lack of tracking work by the authorities.
He believes that the new crown pneumonia is easy to spread, "one or two minutes can be contacted", or may be infected through shared facilities, so the authorities' definition of close contacts may not be completely reliable.
He believes that when the epidemic eases, the tracing work may be more adequate. It is recommended that the definition of a close contact does not need to be a person who has 15-minute contact, eats together, etc. If the working environment is narrow, the contact time is long, etc. People working in the workplace should also be quarantined.
Liang Zichao said on the Hong Kong and Taiwan program "Millenniums" that the Hong Kong epidemic is "not stable", so after three days of zero local infections, there are local cases again. He quoted data that Hong Kong still had 22 sources in October. There was an unknown local case, but there was only one case when the epidemic eased in May and June. "Although there are fewer cases of unknown origin than in July, they have not reached the control stage. Be careful." He also said that more than half of the cases of unknown origin in recent days were Between the ages of 20 and 40, these people are more active in social activities and need to go to work. The 50-year-old woman diagnosed yesterday also reflects the risk of an outbreak at the workplace and also shows that the authorities are not tracking the work.
He continued to point out that, in general, the authorities would define close contacts as those who have 15 minutes of contact, have a meal together, etc. He described the definition as "very arbitrary". If the patient has only one or two minutes of contact with other people, it can be spread. The virus may also spread indirectly through shared facilities, so the definition of a close contact may not be reliable.
He said that when the epidemic slows down slightly, the government should strengthen its tracking work and consider adopting the definition of close contacts. For example, if the working environment is narrow and the contact time is long, people working in the same workplace should also be quarantined.
Liang Zichao believes that when the epidemic eases, the tracing work may be more adequate, and suggested that the government adopt the definition of close contacts.
(Data Picture/Photographed by Lin Ruoqin)
Liang Zichao also pointed out that it is estimated that the 50-year-old woman who was diagnosed was absent from work due to illness. Therefore, when the government sent test sample bottles to the company, she did not return to the company to collect the bottles. Liang Zichao believes that the government should "chase one by one" in this case. Let them not be tested, "because they (with symptoms) are at the highest risk."
He added that even if the authorities provide testing for some of the patients' contacts, the median incubation period of the virus is 5 days. Therefore, it is best to provide two tests. "It is best to test multiple times in the interim. If something happens, expand the scope of quarantine."
I was asked if there are students in the school who are sick, do they need to be quarantined for the whole class?
Liang Zichao said that if patients stay in the class for a long time, the whole class may need to be quarantined; if the stay time is short, they can be tested first, and then quarantine will be arranged when there are new cases.
▼Relaxation measures for restaurants and listed premises starting October 30▼
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