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Dr. Theerawat, Chi Rat, uses rapid test to detect COVID-19 waves 2
December 20, 2020 Dr. Teerawat Hemajuda, MD. Director of the Center for Health Sciences Emerging Diseases Chulalongkorn University School of Medicine Mentions
Situation of the coronavirus 2019 or the second wave of COVID-19 than the blood test for COVID-19 In the situation of the second wave That the blood test for antibodies It is not only useful to know the state of infection in a country, but which can limit its transmission.
The body’s response to infection. It consists of producing IgM IgG antibodies and in these immunities they play a role that can inhibit the virus known as neutralizing antibody (NT), but in 98 cases of covid19 in April and May, patients presented NT early. and Both groups that started with moderate or very less symptoms, and the degree of TN, although very high. From the first day of the hospital he did not stop the disease. That some people develop severe symptoms Harmonize with the results of use It was found that the lymph of the person recovered to treat the infected reduced the amount of the virus only for a short time and did not help in the treatment that the hospital did not consider.
Professor Theerawat said that the IgM test alone without the IgG test, to think that the IgM will disappear after 7-10 days of infection is not true because it can last 32 days until the virus disappears. (Multiple reports will last for months)
“The antibodies will go up to be detected. From the fourth to the sixth day after the date of infection. And it can be found before symptoms. And it has started to spread the infection. It is a presymptomatic phase or it can be found once the incubation period has started. And the symptoms began, ”said Professor Teweith, and that in people infected with COVID-19 who are young and healthy. They often have few symptoms and become diffuse. Makes the antibody test assisted with the PCR assay. It’s a quick detection.
Professor Theerawat said that the use of antibody detection has joined It will tighten the limits of spread AND more convenient in addition to being aware of the extreme situation in distribution AND also preventing an outbreak in the hospital.
“Standard ELISA test at the Center for Emerging Diseases, Thai Red Cross Society, Faculty of Medicine, Chulalongkorn University, although 100% accurate, but not fast enough It takes 3 hours,” said Professor Teerawat, and that the rapid test is a fingertip strip test blood test kit in Chula Bai, by Dr. Woranyoo Pooncharoen and Associate Professor Dr. Suteeratej. Ratings were comparable to the ELISA antibody test method in the Emerging Diseases Health Sciences Center (in collaboration with Singapore, Duke NUS) when testing normal Thai people who donated blood at the Thai Red Cross Blood Center at the Thai Red Cross Blood Center. No is normal (cut-off limit) This is because Thais may have been exposed to bats. That people in Singapore then got tested on people who were actually infe And found that both tests were accurate enough
If positive results should be examined by PCR, but in case of negative results But it is suspicious. Rechecks should be repeated three to five days after that because antibodies may not have been established. For having been exposed to the disease
Theerawat said that the protein used in the assay for this fingertip assay was derived from the drug designated to produce the desired protein that was used as the COVID 19 virus receptor binding protein (as well as the ELISA assay). The demand depends on how much the plant is planted. Time to do a quick test on the 2 minute ripple measurement. At this point, the test ends in 2 minutes, if positive, followed immediately by a nasal PCR probe because antibodies indicate the presence of infection. But it can get stuck for a month and then recover or get infected So I had to stop and find that Can I release the infection?
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