Universal Covid vaccine ‘urgently needed,’ scientists warn

Beta, Delta and Omicron variants have ‘eroded immunity’ of population, reports Lamiat Sabin

Immunity from Covid vaccines has been eroded by new variants (Copyright 2022 The Associated Press. All rights reserved.)

A universal Covid jab is “urgently needed,” scientists have warned after a study confirmed prior infection or vaccination offers only limited protection against new variants.

Variants such as Delta and Omicron are “genetically distinct” from previous forms of the virus and can be transmitted even to people who have been vaccinated or have previously had Covid, researchers found.

The waves were driven by the original Covid-19 virus and Beta, Delta and Omicron, three variants listed as of variants of concern (VOCs) by health authorities.