Officials say a new Brazilian variant of the coronavirus has made its first known appearance in the United States in a person who recently traveled from Brazil to Minnesota. State health officials announced Monday that the Brazil P.1 variant was found in a specimen from a Minnesota resident who had recently been to Brazil. The patient lives in the Minneapolis-St. Paul area and became ill during the first week of January. Viruses are constantly mutating, and new versions – called variants – often emerge. Health officials are also worried about variants that were first reported in the United Kingdom and South Africa.