Experts recommend face masks to prevent the spread of coronovirus; Face mask wearers can protect those around them because the mask blocks respiratory droplets, which have been identified as the main means of COVID-19 transmission. But can wearing a face mask also protect the wearer? This is a possibility, according to a new paper from researchers at the University of California, San Francisco and John Hopkins, which will be published in the Journal of General Internal Medicine.
The paper is based on “virologic, epidemiologic, and ecologic evidence”, arguing that wearing a face mask may reduce the amount of “viral doses” or coronovirus particles exposed to the virus. And according to several studies cited by researchers, low viral doses may cause less severe symptoms, or none at all, of any disease, including COVID-19.
A cited study published in May tested this with coronoviruses and hamsters. Researchers in China set up hamsters’ cages, some infected with coronoviruses and others healthy, and separated the two groups with the division of surgical masks into some groups. Citing this study, scientists at UCSF and Johns Hopkins stated that healthy hamsters were “less likely to contract SARS-CoV-2 infection with surgical mask splitting,” and those with a non-masked one. There was a migraine infection. “Friends.”
Researchers also observed and extensively practiced large-scale coronavirus data before and after. A pre-masking review, he noted, 15 percent of COVID-19 cases were asymptomatic. A more recent review has increased that number to 40–45 percent, and the CDC considered asymptomatic infection to be about 40 percent. In the closed setting of a cruise ship, this legend is also played out. In March, it was estimated that the rate of asymptomatic infection on the Diamond Princess cruise ship was about 18 percent. On the more recent cruise, all passengers and staff were given masks after identifying a positive case. While 128 of the 217 passengers eventually tested positive, 81 percent of them remained asymptomatic.
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While this evidence is indirect, researchers hypnotize that face masks may play a role in increasing the proportion of cases that are asymptomatic, which are problematic for transmitting the virus, to communities without large amounts of severe Can help Cases.
And it can go even further than that, they suggest. Again noting that the evidence is indirect and likely to be influenced by several factors, the researchers nevertheless noted that countries with population-level masking had greater success in reducing mortality from COVID-19. Researchers wrote, “In fact, whenever these areas reopen on a population-wise basis (eg South Korea, Singapore, Hong Kong, Taiwan), there has been a resurgence of cases, so the case mortality remains low. Is, but researchers have written “. He argues that masking may not only lead to a higher proportion of asymptomatic coronovirus cases, but may eventually lead to a decrease in mortality.
Again, asymptomatic infection is a double-edged sword. It could increase the spread of the virus, researchers wrote, but at the same time, “exposing society to SARS-CoV-2 without the unacceptable consequences of critical illness. More and more community-level immunity and slowing down Can spread. We wait for a vaccine. “And they say that” masks filter the majority of viral particles, depending on the type, but not all, “thus increasing the likelihood of a less dangerous asymptomatic infection. is.
Most of the evidence cited does not establish a cut-and-dry, cause-and-effect correlation between masking and low viral doses, and between masking and asymptomatic infections. In new York Times Articles about the paper, with some experts cautious about the conclusion, while others said that it makes “absolute sense” that masking will protect the wearer to some extent. Although more research is needed to overturn the UCSF-Johns Hopkins findings, the paper provides yet another motivation to continue masking: it not only protects others, but it is a safeguard for you. Wearing mask, which can increase the remedy, too.
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