A new study commissioned by the World Health Organization (WHO) has once again demonstrated that wearing masks and goggles, as well as maintaining a social distance of at least 3 feet with others, can effectively reduce the risk of infection with new coronary viruses and transmission. In other words, despite the current shortage of vaccines and special drugs, the implementation of social alienation measures and the use of personal protective equipment (PPE) can help to actively smooth the crazed coVID-19 disease curve.
(Research map: Effects of social distance on communication risk)
It is reported that when socializing close lying with others, it is likely to come into contact with droplets containing pathogens. But if you do a good job of social alienation and personal protection, i.e. wearpersonal protective equipment such as masks, and wash your hands frequently, you can protect yourself and others as much as possible.
These seemingly simple and common measures, combined with extensive monitoring and close contact tracking, can effectively prevent coVID-19 diseases caused by neo-coronaviruses from spreading across the country at some point in the future.
The new study, published in The Lancet, suggests that while there is no reliable way to completely stop the spread of COVID-19, wearing personal protective equipment such as masks and goggles can have positive results.
The scientists studied existing COVID-19 data, as well as studies comparing SARS and MERS, to gain deeper insights into data from 25,000 people infected with coronavirus infection s/ 44 studies in 16 countries.
These WHO-supported studies analysed the impact of personal protective equipment such as social alienation, masks and goggles on the spread of the virus. It turned out that as long as two people could maintain a social distance of at least 3 feet (about 1 meter), the probability of propagation could be reduced by 82%.
Keep a social distance of at least 3 feet and have as little chance of getting the virus down to 3%. In addition, for each additional 3 feet, the risk can be further reduced by half. If it is less than three feet, the risk of infection increases to 13%.
Wearing a mask reduces the risk of infection or transmission to 3%, while the risk of infection without any personal protective items is 17%, which means that protective clothing can reduce the risk by more than 80%.
Medical-grade N95 masks have been shown to be more effective in blocking the spread of new coronaviruses, with a protection rate of up to 96% for wearers and 77% for general medical surgical masks. In addition, goggles can help further reduce the risk of infection, from 16% to 6%.
“We pioneered all direct information about COVID-19, SARS, and MERS, and provided insights on these common and simple interventions to confirm that they do have the effect of calming the epidemic curve,” said study senior author Holger Sch?nemann.
Raina MacIntyre, a professor at the Kirby Institute in New South Wales, Australia, and her colleagues also said in a commentary accompanying the study:
N95 medical masks should be the lowest standard for healthcare professionals. The study also supports the idea that masks are just as effective in healthcare and community settings.
Details of the study have been published in the recently published Lancet journal.
Originally published as Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a-city review and meta-analysis.