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A resident in the Twin Cities metro area of Minnesota has tested positive with a highly contagiousCOVID-19strain that originated in Brazil.

The Minnesota Department of Health confirmed on Monday that the resident had “recent travel history to Brazil” when they contracted what is known as Brazil P.1 variant.

The resident is the first person in the United States to test positive of the strain.

“While this variant is thought to be more transmissible than the initial strain of the virus that causes COVID-19 disease, it is not yet known whether the variant causes more severe illness,” the MDH said in astatement.

The state does routine variant surveillance testing, which allows them to look at patterns in test results to determine if a result is out of the norm.

“We’re thankful that our testing program helped us find this case, and we thank all Minnesotans who seek out testing when they feel sick or otherwise have reason to get a test,” Minnesota Commissioner of Health Jan Malcolm said.

The Twin Cities resident became sick the first week of January and got tested on Jan. 9. After they tested positive, MDH reached out to the patient to confirm they traveled to Brazil.

State Epidemiologist Dr. Ruth Lynfield added, “These cases illustrate why it is so important to limit travel during a pandemic as much as possible. If you must travel, it is important to watch for symptoms of COVID-19, follow public health guidance on getting tested prior to travel, use careful protective measures during travel, and quarantine and get tested after travel.”

Little is known about the severity of symptoms of the Brazil variant of COVID-19 that has caused rising number of cases in the city of Manaus.

“It is fair to say that P.1 is the object of very, very serious attention and concern among epidemiologists. We don’t know why it has been so successful in Manaus,” The mutation “is probably the one causing the most concern among people watching this,” William Hanage, an epidemiologist at the Harvard T.H. Chan School of Public Health, told theWashington Post.

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In addition to the Brazillian P.1 variant, health officials around the U.S. are still learning about theU.K. B.1.1.7 variantand South Africa’s B.1.351 variant.

As information about thecoronavirus pandemicrapidly changes, PEOPLE is committed to providing the most recent data in our coverage. Some of the information in this story may have changed after publication. For the latest on COVID-19, readers are encouraged to use online resources from theCDC,WHOandlocal public health departments.PEOPLE has partnered with GoFundMeto raise money for the COVID-19 Relief Fund, a GoFundMe.org fundraiser to support everything from frontline responders to families in need, as well as organizations helping communities. For more information or to donate, clickhere.

source: people.com