Coronaviruses (CoVs) are a well-known group of viruses in veterinary medicine. We currently know four genera Coronavirus, alfa, beta, gamma, and delta. Wild, farmed, pet animals infected with CoVs belonging to all genera. Seven human respiratory coronaviruses have still been identified, which cause upper-respiratory-tract diseases, specifically, the common cold, last three that emerged severe a...

The problem of researching the relation between bilingualism and cognitive development at once raises two thorny definitional issues. What do we mean by bilingualism, and what is it that develops in cognitive development? Much of the confusion in this area can be attributed to the lack of theoretical specificity in defining the intersection point of these component concepts. Our primary emphasi...