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Written by: Chen Jiayi
2020-08-10 10:41
Last update date: 2020-08-10 10:47The third wave of the new crown pneumonia epidemic in Hong Kong continues. The government recently announced the launch of a voluntary universal community test. The public can take one test for free, and it is expected to start in two weeks at the earliest. The Director of Food and Health, Chen Zhaoshi, expected about 5 million people to participate in the test. He pointed out that the use of deep throat saliva and throat swab tests are both scientifically effective and the details are yet to be finalized.
Infection and infectious disease specialist Zeng Qiyin said that he was worried that citizens would use throat swabs to take samples on their own. The quality of the samples would affect accuracy and greatly reduce the effectiveness of the national test. It is recommended that medical staff take samples.
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The government recently announced the launch of a voluntary universal community test, where citizens can take one test for free, and it will start in two weeks at the earliest. The Director of Food and Health, Chen Zhaoshi, expected about 5 million people to participate in the test. He pointed out that the use of deep throat saliva and throat swab tests are both scientifically effective. The details have yet to be finalized. It has not been announced that citizens will take samples by themselves or be assisted by medical staff.
Infectious and infectious diseases specialist Zeng Qiyin said in an interview with a radio station today (10th) that the universal community testing program must have a positive effect, but he is worried that citizens use throat swabs to take samples on their own. The quality of the samples will vary, which will affect accuracy. , Greatly reducing the effectiveness of national testing.
The swab needs to touch the throat bell and the back of the tonsils
He explained that when observing the throat, the doctor uses tongue pressure to depress the tongue. The swab needs to touch the throat bell and the back of the tonsils. If the tongue is not depressed, it is difficult to swab the deep throat. There is a chance to collect secretions from the mouth or tongue instead of taking it. Throat secretion affects the accuracy of detection.
He believes that citizens have not been trained, they may not understand the correct sampling location, or the collection of secretions is insufficient. He pointed out that the sampling process is very uncomfortable. Some people will be very scared. They think that the government needs to understand the reaction of the public and whether it is confident that it can sample by itself.
Infection and infectious disease specialist Zeng Qiyin said that he was worried about the poor quality of self-sampling and recommended that medical staff take throat swabs. (Profile picture/Photo by Huang Baoying)
Zeng Qiyin worries that the nationwide testing program will cost money, manpower and material resources, but the uneven sampling procedures will waste reagents. He believes that if the government is determined to use throat swabs for testing, it is better to have medical staff taking samples, but the manpower and material resources for implementation must be considered.
He pointed out that it takes about 10 to 15 seconds for the medical staff to sample each throat swab, together with the packaging and sealing of the container, and the identity verification procedures. It takes an average of 3 to 4 minutes to process one person. He predicts that medical staff can handle up to 20 people sampling procedures per hour, describing it as a major project, "bigger than the September Legislative Council election," and it will handle about 5 million citizens, more than 3 million voters.
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Center for Health Protection of the Department of Health