According to the report on the genetic diversity of the new coronavirus by the National Institute of Health Doctor Ricardo Jorge (INSA) released today, this variant, associated with India and considered to be more transmissible, continues to be "dominant in all regions" of the country.
In Lisbon and Vale do Tejo, Delta was, between 5 and 11 July, responsible for 97.2% of the cases of infection, while in the North the prevalence was 87%, in the Centre 96.3% and in the Algarve of 94.1%, reports the INSA.
The report also states that, regarding the additional mutation of this variant known as Delta Plus, it has shown a decreasing trend, with no case having been detected in the last two weeks, apart from the 56 already registered previously.
As for the Alpha variant, associated with the United Kingdom and which was once predominant in Portugal, it now represents only 4.4% of cases of infection in the country.
According to INSA, the frequency of Beta and Gamma variants, originating in South Africa and Brazil, respectively, remains low and without a growing trend, and no case of Lambda was recorded in Portugal, a variant that has a large circulation in Peru and Chile.