Coronavirus infections have been reported in Spain, Italy, the Netherlands, the United States and Switzerland.According to Qadin.Net, this was reported by the World Health Organization.In Copenhagen, it is said that such a mutation in the coronavirus could impair the effectiveness of any vaccine.At the same time, scientists believe that mutations in the virus are a typical phenomenon that in most cases do no harm and do not cause a more serious course of the disease in humans.A coronavirus mutation has been detected in otter farms in Denmark, so special restrictions have been imposed in the north-east of the country.