COVID-19's lost puzzle piece: the power of domestic animal reservoir

In recent months, despite being aware of the COVID-19 pandemic, many countries faced increasing epidemic of this disease. Nearly all countries tried to decrease human-to-human contact as the principal mode of transmission of SARS-CoV-2. Other modes of transmission also need to be clarified in more depth, especially, the foodborne transmission. We assessed the effect of animal origin foods (AOF) consumption on the pandemic of COVID-19. For this purpose, we studied the relationship among 20 food supply as independent variables, and the parameter of Total Cases dependent variable. Here we show a relationship between a group of AOF and total cases. Stepwise Regression, Bayes, and Lasso results showed that eggs and fresh fish have positive coefficient. So, among the transmission ways of COVID_19, the role of foodborne transmission should be more significant than previously thought. The possibility of animal origin foodborne transmission should be taken into more consideration. There is need to invent a pasteurization-like-processes to implicate immediately before ingestion of food. Of course, there will be challenges along the way of the revolution in the food preparation culture. The perspective is to expand the surveillance of SARS-Cov-2 during the food production chain. In conclusion, the results of the present study indicate that the reservoir of SARS-Cov-2 may be some of the domestic animals. It should be noted that this study was conducted with data related to the time (2013) before the effect of COVID_19 pandemic on food supply. It is recommended that virologists examine the possibility of freshwater fish and chickens eggs being reservoirs for SARS-Cov-2. Author summaryAt the time of writing this manuscript, the number of total cases of COVID-19 past seven-million mark. During the pandemic, most countries around the world minimized human-to-human contact and travels. However, the prevalence of COVID-19 continued. Despite the awareness of many countries about the principal mode of person-to-person transmission, the rapid outbreak shows the necessity of research on other transmission routes. We suppose the role of FBT of COVID-19 should be more significant than previously thought. The effect of a group of AOF including eggs and fresh fish on total cases was significant in our analysis. At present, we are not able to interpret all significant effects and their coefficients. Interpretation of the factors could be the subject of future researches. In food science technology, it is necessary to expand the detection of viruses to all AOF. WHOs recommendations state that COVID_19 have not FBT, and suitable food safety practices could prevent the probability of FBT. However, the realization of proper food safety practices for all foods is questionable.