Last week, the UN agency warned that Omicron would not be the last SARS-CoV-2 variant that would cause concern, as there are “still many opportunities for the virus to spread and generate new variants”, in addition to that “ variants are competing and evolving”.
The experts reiterate the call for greater access for populations to vaccines against covid-19, especially those in the poorest countries, especially in Africa, where they remain mostly unprotected, not only to reduce the serious disease, but also to stop the possibility of appearance of new strains.
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WHO Director-General Tedros Adhanom has insisted that the end of the Covid-19 pandemic depends on equal access to vaccines, not the administration of booster doses.
The WHO has created an advisory group made up of 18 experts that assess the public health implications of variants of concern for SARS-CoV-2 on the performance of Covid-19 vaccines and provide recommendations on vaccine composition.
In the report released today, experts say, citing preliminary data, that the effectiveness of vaccines “will be reduced against symptomatic disease caused by the Ômicron variant”, but “it is more likely that protection against severe disease will be preserved”.
“However, more data is needed on the effectiveness of vaccines, particularly against hospitalization, serious illness and death,” they note.
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