A North American variant of the coronavirus can be up to 60% deadlier than one that originated in Wuhan, China. The strain, called Iota, has a high transmission rate, according to a study carried out by researchers in New York and Columbia, in the United States.
The variant was first identified in November 2020, in New York, and there are no cases registered in Brazil, according to the newspaper O Globo. There is the possibility that the variant will arrive in Brazil through international travel or as a result of the lack of control of the pandemic.
Iota escapes the body’s defense system in up to 10% of cases and has a fatality rate similar to Alpha, which was first detected in the UK and is 60% deadlier than the original.
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The variants of concern are those that, in addition to spreading, increase the transmission rate, change or increase symptoms, reduce the effectiveness of diagnoses, vaccines and therapeutic treatments.
Other research, however, has shown that Iota is not as resistant to treatments and it does not increase the risk of serious infections in people who are immunized or who have already had the disease.
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