Background (Introduction): COVID-19 has caused serious damage in every country around the world. Some countries have implemented a lock down for a short period seeking to both address the COVID-19 issue while carrying out economic activities. Vaccinations have also begun in some countries, but a significant effect has yet to be seen. Rather, in actuality infections continue to increase at a slow pace. Objective (Purpose): Although lock downs and limits on operating hours for restaurants have been implemented, infection clusters originating from restaurants still occur. Recently, clusters which originate in the family have also occurred. Here, specific causes of clusters are analyzed and a countermeasure recommendation is reported. Method: A person must take off his mask while eating and drinking. If one is alone, not to putting the mask back on is fine. However, if others are present, the possibility of infection by airborne droplets during conversation cannot be dismissed. However, when eating and drinking in a group, most people do not put their mask back on. This is clearly a “rule violation.” Consequently, actual conditions are shown using t-WFC, an analysis of COVID-19 clusters is carried out, and a countermeasure is proposed. Results: There is no guarantee that the others with whom one is eating and drinking are not infected. The person may be in the incubation period, or being a carrier without symptoms. Consequently, when not eating alone, one should wear a mask. In addition, efficacy of a mask varies by type. More effective masks should be used. There are some rules in time for meal together, such as social distancing, the number of participants, etc. However, effective mask use can prevent infection while eating and drinking. Conclusion: The misconception that the eating and drinking members do not have virus should be corrected.
Share this page on your timeline