Nationwide Testing | Antibody experts who have recovered when two people tested in a week: reflect more invisible transmission

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Written by: Zheng Cuibi

2020-08-29 23:12

The new crown pneumonia epidemic has not stopped. There have been several cases of antibodies detected during testing in Hong Kong, including the son of a foodpanda takeaway, a one-and-a-half-year-old boy and his mother who were admitted to the children’s hospital.

Xu Shuchang, a government expert consultant and chair professor of the Department of Respiratory System of the Chinese University School of Medicine, believes that these cases reflect that there have been many invisible transmissions in the community earlier, and they have not been detected by the monitoring system. patient".

Respiratory specialist Liang Zichao believes that people in the community who have antibodies to the new coronavirus may be ten times more than the current confirmed cases. It is not very useful to find these people because they are no longer infectious, even if they have been traced. People who have not been able to determine how long ago the contacts need to be traced, and it is very likely that these people have already spread the virus.

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Foodpanda delivery staff and sick mothers test negative but have antibodies

The Department of Health announced yesterday that a family of four living in Sheung Lai House, Sheung Tak Estate, Tseung Kwan O, was infected with the disease. The female householder and eldest son of Foodpanda were diagnosed on Thursday (27th). Her husband had been ill for a week. After the diagnosis was confirmed, the Department of Health followed up and found that although the second son tested negative for the virus, he had antibodies in his body, indicating that he had been infected and recovered and was suspected to be an invisible patient.

The Hospital Authority also announced on Tuesday (25th) that a one-and-a-half-year-old boy himself went to the Children’s Hospital for an appointment for treatment of a child’s hernia. He tested positive for the virus at the time of admission. His serum sample tested positive for antibodies. The authorities estimated that he was in Infected earlier; her mother tested negative for the virus, but the serum sample report showed that she had antibodies.

Xu Shuchang believes that these cases reflect that there have been many invisible transmissions in the community earlier, and they have not been detected by the surveillance system. If universal testing is implemented, it will help to find these "invisible patients."

Xu Shuchang believes that the cases of antibodies that have been detected at the time of testing reflect that there have been many invisible transmissions in the community earlier, and they have not been detected by the surveillance system. (Information Picture/Photo by Lu Yiming)

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Liang Zichao: The number of people with antibodies may be ten times more than those who have been diagnosed

Respiratory specialist Liang Zichao believes that the number of people in the community with antibodies to the new coronavirus may be ten times more than the current confirmed cases. The current cases of this batch of cases have been found, reflecting the delay in testing. He said that if they are infected, antibodies will appear within one to two weeks. By then, they will be non-infectious. Therefore, it is not very useful to find these people. It's useless; if you track people you have previously contacted, but because you don't know when they were infected, and you don't know when they were first close contacts, even if you find them, they may have become ill and infected."

He added that when implementing universal testing, it is also necessary to pay attention to whether the confirmed persons will have antibodies before deciding whether to isolate them and their close contacts.

Liang Zichao believes that the number of people in the community with antibodies to the new coronavirus may be ten times more than the current confirmed cases. It is not very useful to find these people because they are no longer infectious. (Photo/Photo by Lin Ruoqin)

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