Why new strains Koronavirus find to United Kingdom?

One of the last "disturbing" options Koronavirus was found in Bristol in the southwest England. About it while a little that is known. At present scientists established that the new strain differs from earlier revealed Kentish strain a mutation in shipovidny protein. It is registered at the Brazilian and South African options Koronavirus. Now the strain from County of Kent dominates to United Kingdom. On preliminary an assessment of experts, it can be to 70% for more infectious, than genetic options of a virus earlier meeting in the country, and its lethality can be 30 higher...