It is not necessary. Diligent hand washing is sufficient. Indirect contact transmission may result from hands touching objects contaminated with novel coronavirus and then touching the eyes, mouth and nose. There is no need to be overly nervous because the novel coronavirus survives for a limited time outside the body, and also in non-endemic areas, the probability of items in supermarkets being contaminated by mouth droplets from patients is very low. An extra step that can also be taken if you are not confident about the items purchased in supermarkets is to sterilize the items. It is worth noting that during the critical period of the epidemic, everyone must pay attention to hygiene and wash their hands diligently, and always wear a mask when going out, which is responsible for themselves and others. Content source: Dr. Yurai