Researchers said that the virus that causes the COVID-19 virus can survive on banknotes, mobile phone screens, stainless steel and other surfaces for up to 28 days.
The British Broadcasting Corporation (BBC) reported that Australia’s largest national scientific research organization, the Australian Commonwealth Scientific and Industrial Research Organization (CSIRO), showed that the new coronavirus SARS-Cov-2 can live longer than originally thought.
Some experts also questioned the actual risks posed by the spread of viruses on the surface of objects in real life.
The new coronavirus is mostly spread when coughing, sneezing and speaking, but there is also evidence that it can be spread by suspended particles. According to the Centers for Disease Control and Prevention (CDC) of the United States, people may also be infected touching the surface of objects such as metal or plastic with the virus on it.
How long can the virus survive?
Previous laboratory tests found that SARS-Cov-2 can survive for 2 to 3 days on banknotes and glass surfaces. Moreover, up to 6 days on plastic and stainless steel surfaces, but the results of the study vary.
However, the Australian Commonwealth Scientific and Industrial Research Organization found that this virus is “extremely tenacious” and can survive 28 days on smooth surfaces such as mobile phone screens, plastic banknotes and banknotes at 20 degrees Celsius or room temperature and in the dark. In contrast, influenza viruses can only survive for 17 days in the same environment.
The study, published in the Virology Journal also found that SARS-Cov-2 has a shorter survival time in hotter environments; on some surfaces, the virus is at 40 degrees Celsius within 24 hours It is not contagious.
This new study observes how long the new coronavirus can survive on the surface of the glass, paper and plastic banknotes. Besides that, they found out that it can live for 28 days at 20 degrees Celsius. In fact, this is much longer than in previous studies. However, the experiment was conducted under virus-friendly conditions, including in a dark room and the temperature and humidity are stable, so the virus may not be so good in the real world.
It can survive on the food surface too
The authors of this study said that SARS-Cov-2 can survive on stainless steel at lower temperatures. Which may help explain why meat processing and cold storage facilities may have outbreaks of COVID-19. These researchers also said that their findings support previous research claims that the virus can survive on fresh and frozen food.
Even so, these results still highlight the need to wash hands. Moreover need to clean the touch screen frequently to avoid touching the face and help reduce the risk of infection.
Ron Eccles, former director of the Cold Center at Cardiff University in the United Kingdom, criticized the study. Furthermore, he said that the new coronavirus can survive for 28 days has caused unnecessary panic among the public.
He said: “The virus can spread from dirty hands to the surface of objects through coughing and sneezing mucus. This study did not use fresh human mucus as a vector for spreading the virus. Fresh mucus is a hostile environment for viruses. This is because it contains a lot of White blood cells produce enzymes to destroy the virus. In addition, they also contain antibodies and other chemicals to neutralize the virus.”
He added, “I think the infectious virus will only survive in the mucus on the surface for hours instead of days.”
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