Will there be coronavirus on the PE bag?

Plastic bags, plastic films, plastic packaging bags, these are essential daily necessities in our daily life, so will there be coronavirus on PE plastic bags? This can be inferred from the characteristics of other coronaviruses, such as the famous SARS.

A study simulated the situation of SARS patients sneezing in express package: prepare a liquid with a virus concentration close to the patient's nasopharyngeal secretion, take an amount (5μl, radius 1mm) equivalent to larger respiratory droplets, and drop it on paper and plastic.

The infectivity of SARS virus disappears after the paper is dried (about 5 minutes), but it can stay on the plastic for 1 hour. If the virus concentration is increased by 100 times, the virus can survive for 24 hours on paper and up to 2 days on plastic. In another study, the survival time of SARS virus on wood and soil surface was significantly shorter than that of glass and metal. Therefore, compared with waterproof materials, SARS virus loses its infectivity faster on the surface of absorbent materials. For clothes, the survival time of virus on the surface of absorbent cotton clothes is also significantly shorter than that of waterproof fabrics.

Glass, ceramics and general metal materials are similar to plastics. SARS virus with high concentration can survive on the surface of objects for 4~6 days at room temperature, but metal surfaces with high copper content are not conducive to virus survival.

That is to say, if a coronavirus patient sneezes into a PE plastic bag without wearing a mask, the PE plastic bag or other plastic products on which the patient's droplets are stuck may have viruses in a certain period of time. Under normal circumstances, it is impossible to have an ordinary PE plastic bag or other plastic products, because coronavirus only infects vertebrates, such as humans, rats, pigs, cats, dogs, wolves, chickens, cattle and birds, and cannot survive in PE plastic bags or other plastic products for a long time.

No matter what material, avoiding contact with eyes, nose and mouth after taking it and standardizing hand washing can effectively avoid Covid-19 infection. Therefore, I think that as long as we actively protect ourselves, wear masks, wash our hands frequently, and don't/seldom go to crowded places.