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The coronavirus appears to stay longer in certain public spaces.
While New York Governor Andrew Cuomo said he could extend the blockade to certain parts of the state beyond May 15, more than 30 states are preparing to reopen their economies. Businesses, including gyms and lounges, are reopening in Georgia, despite failing to show a 14-day downward trajectory of cases as set by White House benchmarks for reopening states.
Do not miss:“We will not have a vaccine next winter.” Like the 1918 Spanish flu, the CDC says the second wave of coronaviruses could be worse. So what happens next?
Health professionals warn people to exercise caution in restaurants (and with restaurant menus), elevators (and with elevator buttons), gyms (and with fitness equipment), and fitness stores. groceries (and with carts / baskets), particularly since a dozen other cities have similar plans Colorado, Florida, Idaho, Indiana, Iowa, Louisiana, Mississippi, Montana, North Dakota, Ohio, South Carolina, Tennessee, Texas, Utah and Wyoming have also said they would start opening certain nonessential businesses.
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It’s better to avoid high-traffic areas, especially where there’s humidity, and the researchers found more coronavirus sprays in patient bathrooms and in locker rooms for doctors.
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Some public spaces appear to be environments more hostile to the new coronavirus than others, according to a new study published in the journal Nature Research and conducted by a team of researchers, led by Ke Lan, professor and director of the State Keyboard Laboratory. Virology at Wuhan University in the Chinese region where COVID-19, the disease caused by SARS-CoV-2, was first reported.
It is best to avoid high traffic areas, especially where there is humidity. After installing small aerosol traps (airborne particles) in two hospitals in Wuhan, the researchers found more coronavirus sprays in the patients’ bathrooms and in the locker rooms for doctors. “While transmission of SARS-CoV-2 through human respiratory drops and direct contact is clear, the potential for aerosol transmission is poorly understood,” the researchers wrote.
The study had some good news for hospitals: There were fewer sprays in isolation rooms and patient rooms with good ventilation and complete disinfection, the study found, published Monday. “Our results indicate that room ventilation, open space, disinfection of protective clothing, and proper use and disinfection of bathing areas can effectively limit the concentration of SARS-CoV-2 RNA in aerosols,” they wrote.
Public transportation is also a hot spot, according to a working paper released April 24 by Jeffrey Harris, a professor in the Department of Economics at the Massachusetts Institute of Technology. “The maps of the subway turnstile entrances, superimposed on the ZIP code level maps of the reported incidence of coronavirus, are very consistent with the spread of diseases facilitated by the subway. Local train lines appear to be more likely to transmit infections than express lines, “he found.
The number of cases, meanwhile, continues to rise. As of Saturday, 6.5 million people had been screened in the US. USA To detect SARS-CoV-2. There were 1,107,815 confirmed cases and 65,244 deaths in the US. USA, of which 18,399 were in New York City. Worldwide, there were 3,369,208 confirmed cases and 239,448 deaths, according to the Johns Hopkins Whiting School of Engineering.
Is 6 feet really the “magic number” in public spaces?
However, the study only covers about half of the stops on the Flushing line through Queens neighborhoods with some of the highest COVID-19 rates. Findings that a drop in subway transportation is associated with a subsequent reversal of COVID-19 cases could be an indicator of other concurrent social distancing activities, Harris wrote. Health professionals say that occupying closed spaces and not keeping six feeding distances contributes to transmission, and they recommend that people go to open spaces such as parks if they simply go outside.
A study published in The New England Journal of Medicine last month by scientists from Princeton University, UCLA and the National Institutes of Health concluded that the virus could remain in the air “for up to 3 hours after aerosolization.” Scientists discovered that SARS-CoV-2, the virus that causes the new disease COVID-19, was detectable in the air for up to three hours, up to four hours with copper, up to 24 hours with cardboard, and up to two to three days in plastic and stainless steel.
However, proving that airborne particles lead to transmission is less clear, but “plausible,” the researchers wrote. Still, it is recommended that you stay at least six feet away from other people, especially indoors, experts say, and the US Centers for Disease Control and Prevention. USA They recommend wearing face masks or covers in public. “Studies have looked at how far droplets and saliva fly, and that’s the magic number,” said Luis Ostrosky, vice president of internal medicine at McGovern School of Medicine in Houston.
Another study suggested up to 13 feet. According to research by researchers led by a team from the Beijing Academy of Military Medical Sciences, it was published in Emerging Infectious Diseases, an open-access, peer-reviewed journal published monthly by the Centers for Disease Control and Prevention of USA USA . Many of the coronavirus drops were found on the ground “perhaps due to gravity and air flow” and “half of the samples on the soles of the shoes of the medical staff of the Intensive Care Unit tested positive.”
“Most face masks do not effectively filter small particles from the air and do not prevent leakage around the edge of the mask when the user inhales,” says the CDC.
MarketWatch / iStockphoto photo illustration
The lifespan of the virus varies by surface.
“It is not certain how long the virus that causes the coronavirus survives on surfaces, but it appears to behave like other coronaviruses,” said the World Health Organization. “Studies suggest that coronaviruses, including preliminary information on the COVID-19 virus, may persist on the surface for a few hours or up to several days.” Higher temperatures are likely to degrade it. But experts caution that as spring arrives in the northern hemisphere, which generally marks the end of the traditional flu season, the coronavirus doesn’t necessarily go away.
Its useful life will also vary, depending on the type of surface, temperature and / or humidity. Bathrooms are a welcoming environment for coronaviruses. “Previous coronaviruses can remain viable on cold, wet surfaces for up to nine days,” said Ostrosky. Therefore, if you are sharing a house with someone who has coronavirus, he advises against sharing the same bathroom.
As for air travel, in-flight oxygen is likely to be of higher quality than the air in your home. “If you have an infected person in the front of the plane and you’re in the back of the plane, your risk is close to zero simply because the exposure area is believed to be approximately six feet from the infected person.” according to Charles Chiu, professor of laboratory medicine at the University of California, San Francisco.
“Ventilation rates provide a total air change of 20 to 30 times per hour,” says the WHO. “Most modern aircraft have recirculation systems, which recycle up to 50% of the cabin air. The recirculated air generally passes through HEPA (High Efficiency Particulate Air) filters, the type used in operating rooms and hospital intensive care units, which trap dust particles, bacteria, fungi and viruses. “
