The World Health Organization (WHO) said in its weekly report on COVID-19, released on Tuesday (21), that the delta type of coronavirus is already spreading “in most regions of the world”.
The organization also notes that the strain, which was identified in India in October 2020, represented 90% of all genetic sequences submitted to the global GISAID database with a sample collection date between June 15 and September 15.
In Brazil, data from the Fiocruz Genomic Network shows that deltas are indeed prevalent in Brazil, with 74.5% of all genomes sequenced in August. In the previous month, the prevalence was 25.4%.
The World Health Organization classifies Delta as a VOC (variable of concern), particularly as it is more transmissible than other breeds such as Alpha, Beta and Gamma.
The variant also has a greater ability to reduce neutralizing antibody activity conferred by the COVID-19 virus itself and by vaccination.
However, full immunization remains the best way to avoid severe disease, regardless of the alternative.
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