This variant, which first appeared in India, is the most contagious listed since the appearance of the pandemic in early 2020.
Its rise and the lifting of health restrictions in many parts of the world have led the World Health Organization (WHO) to warn that the “world was at a dangerous point in this pandemic” whose death toll exceeded four million.
The Covid-19 has killed at least 4,004,966 people around the world since its appearance at the end of December 2019, according to a report established by AFP from official sources Thursday at 10 am GMT.
Six months after the 2nd dose
The Pfizer / BioNTech alliance has announced plans to request “in the coming weeks” authorization for a third dose of its vaccine against Covid-19, in the United States and in Europe in particular.
“Preliminary study data shows that a booster dose given 6 months after the second dose has a consistent safety profile, while eliciting high levels of neutralizing antibodies.” against the virus, including the Beta variant, which appeared in South Africa.
These levels are “5 to 10 times higher” to those observed after the initial two doses.
The two companies also pointed out that their vaccine had shown good results in the laboratory against the Delta variant, and that a third dose would therefore be able to boost immunity against it as well. Tests are underway for “confirm this hypothesis”, they said.