Can coronaviruses’ standby ‘for up to 9 days? Is the study reliable?

In response, Charles Chiu, a professor of infectious diseases at the University of California, San Francisco, said that the SARS coronavirus and novel coronavirus genetic sequence similarity of 80 percent, so the study has a certain reference.

A close comparison of the data from the study published in the “Journal of hospital infection” shows that the duration of coronavirus survival is strongly related to ambient temperature, humidity, and the state of the virus itself. The coronavirus does not survive long at the wrong temperature and humidity.

In addition, sunshine, ultraviolet ray and so on can have a certain inhibitory effect on the activity of the virus. As a result, the virus’s survival time in the real world is much shorter than in the laboratory. So when we go home, Hanging your clothes outside for a few days or at least a few hours under the sunshine can help kill the virus that lingers on the surface of your clothes.

Nancy Messonnier, director of the U.S. national center for immunization and respiratory diseases, said novel coronavirus viruses typically survive for no more than a few hours on surfaces outside the body of the host.

Li lanjuan, an academician of the Chinese Academy of Engineering, said in an interview that the novel coronavirus had only 48 hours to survive in a dry environment. After 2 hours in the air, its activity also decreased significantly.

The CDC also noted that novel coronavirus has poor surface viability. Although Covid-19 can be transmitted by touching objects or surfaces with the virus and touching the mouth, nose or eyes. However, this is not the main route of transmission.

At present, the main means of transmission of the novel coronavirus are respiratory droplets and contact transmission, aerosol and fecal-oral transmission. Epidemiological investigations have shown that many cases can be traced to close contact with confirmed cases. (Feng junzhao, researcher of infectious diseases department, Chinese center for disease control and prevention) This is why we must wear a mask and better with protective glasses when we go out and should not think that only patients need to wear the mask. Because you will never know who is already get infected around you, and in this case, you may in large chance to get infected if you are without those protective items.

According to the NHS website, the length of time a virus lives outside the body depends on the surface of the object it is attached to, as well as environmental conditions such as temperature and humidity. Overall, the virus survives longer on impermeable (waterproof) surfaces, such as stainless steel or plastic; The virus has a relatively short survival time on permeable surfaces such as fibrous fabrics or paper towels.

• How can we protect ourselves？

How can we protect ourselves against novel coronavirus that can survive on surfaces?

In fact, Kampf’s team came up with a solution at the same time they published their research.

The team points out that surfaces can be cleaned with disinfectants.For example, use 0.1% sodium hypochlorite or 62% to 71% ethanol.This can significantly reduce the activity of coronavirus on surfaces within 1 minute.

Another member of the research team, virologist Eike Steinmann of Leibniz University in Hanover, Germany, noted that the team had analyzed and tested many coronaviruses’ properties and responses to disinfectants, with similar results, ScienceAlert reported. A similar effect is expected with the novel coronavirus.

In addition, the team points out that frequent hand washing and sanitizing of public areas is a “small” price to pay.”In hospitals, common areas to disinfect include doorknobs, bedside tables, bed frames and metal or plastic objects near the patient.”Kampf pointed out.

·Experience content is for reference only, if you need to solve specific problems, it is recommended to consult relevant professionals in detail and seek medical advice in time.

· Author’s statement: This article is original, without permission, do not reprint (welcome to forward this article link)

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