The delta variant (originated in India) causes more severe and faster disease than during the first wave. The claim was made by doctors in the southeastern China region of Guangzhou, where the outbreak of the strain recently emerged.
Chinese doctors said last week that The load of SARS-CoV-2 virus in the body increases more rapidly From the variable that initially affected Wuhan that is taking longer to subside.
Director of Intensive Care at Sun Yat-sen University (Guangzhou), Guan Xiangdong, mentioned above By The New York Times, up to 12% of Covid-19 patients said they have Serious illness in three or four days, whereas in the past the average was 2-3% of patients.
In the UK, where the delta variant already accounts for the majority of new infections, cases of infection have been reported in people who have already taken one or two doses of the vaccine. In China, no vaccine efficacy data against this variant has been reported.
Guangzhou and other places affected by the outbreak have been isolated and thousands of people have been quarantined. Testing and isolation allowed to slow the progression of infection, but The transmission chain is not completely locked, the New York Times reported.
in Portugal , The delta variable is already transmitted in the community And not just between people who have a travel history or who have a relationship with them. As of June 9, 92 cases of the Indian variant have been identified from among the virus samples that have been sequenced (i.e. genes are read).
National Institute of Health Dr. Ricardo Jorge estimates the variant prevalence in May was 4.1%, but admits the results may be an underestimate. As evidenced by the UK, the ، The prevalence of this variant is likely to be higher to that calculated by genetic sequencing.
It was the growth of this variant in Portugal and, in particular, the presence of the variant with an additional mutation, K417N, that caused the United Kingdom to remove Portuguese territories from safe destinations for British travelers.