Ten people from three families who ate at the positive restaurant Covid-19. Corona virus spread through AC.
A study in China showed that air conditioner (AC) might help spread the new corona virus, Covid-19. The conclusion was drawn after examining ten cases of Covid-19 from three families who simultaneously had dinner at a restaurant in Guangzhou at the same time.According to The Straits Times , the study was published by the Centers for Disease Prevention and Control (CDC) and was approved by the Guangzhou CDC Ethics Committee. In the study it was found that droplets or liquid droplets of people infected with the corona virus may have spread through the AC air flow to the tables of three families who had dinner at the same time.
Patient studied arrived from Wuhan in late January and had dinner with three family members. There were two other families in the restaurant, their tables close together, less than a meter.On the following day, the patient studied had a fever and cough. After undergoing a hospital test, Covid-19 tested positive. Meanwhile, in early February, nine other people, who came from three families – who had dinner at the restaurant at the same time – fell ill with the corona virus.The only source of transmission to the nine known is the patient who is a member of the three families who had dinner at the same time. So that the study concluded that the corona virus was transmitted by one such person.
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Restaurant where the three families had dinner was without a window. There is only one air conditioner on one side and a vent on the other side. The three families had dinner in the restaurant for about an hour with their seats close together.Ten of the 83 customers who ate at the restaurant on the same day were infected with Covid-19. They are from these three families. Meanwhile, 73 others were considered as people who had close contact and were quarantined for 14 days. However, after being tested, those who were quarantined were declared negative by Covid-19.
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Study found that transmission of the corona virus was not only transmitted by droplets. “Larger respiratory droplets remain in the air for only a short time and spread at close range, generally. The distance between the index patient and those at other tables is all less than one meter,” the study wrote.This study concludes that the key factor for infection in this case is the direction of air flow. To prevent the spread of Covid-19, restaurants must widen the spacing between tables and increase ventilation.
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Wuhan Research: Blood Type A Likely More Vulnerable to Corona Virus
An early study in China showed people with blood type A might be more susceptible to new corona virus. Meanwhile, people with blood type O may be more resistant to the virus with the official name Covid-19.The study was conducted by a medical team in China of 2,000 positive patients infected with the new corona virus in Wuhan, which was the beginning of a pandemic center, and Shenzhen. The study found that blood type A patients showed higher infection rates and tended to experience more severe symptoms.
However, the researchers stressed that this research was still preliminary and further studies needed to be done.”People with blood type A may need to specifically strengthen immunity to reduce the chance of infection,” wrote researchers led by Wang Xinghuan, quoted from the South China Morning Post , Wednesday, March 18, 2020.
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Patients infected with Sars-CoV-2 (the virus that causes Covid-19) with blood type A may need to receive more vigilant supervision and aggressive treatment,” Wang wrote.
In contrast, according to the paper they published at Medrxiv.org on March 11, “Blood type O has a significantly lower risk of communicable diseases compared to non-O blood groups.”Of the 206 patients who died from Covid-19 in Wuhan, 85 were blood type A. That figure was 63 percent more than patients with blood type O, which number 52. This pattern occurs in different age groups and genders.management options and assess people’s risk exposure levels,” Wang wrote.
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Study was conducted by scientists and doctors from cities throughout
China, including Beijing, Wuhan, Shanghai and Shenzhen. However, this study has not been reviewed by other research groups. The researchers also warned of the possible risks of using interim study results as a guide for current clinical practice.Gao Yingdai, a researcher from the State Key Laboratory of Experimental Hematology in Tianjin, who was not involved in the study said that this finding could be improved by increasing the number of larger samples.
Although the number of 2,000 patients involved in the sample is arguably not small, the number is still small when compared to the total number of patients infected by the new corona virus, whose number worldwide is now more than 180,000.According to Gao, another limitation of this research is that it does not provide a clear explanation of the phenomenon, such as molecular interactions between viruses and various types of red blood cells.