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.
https://www.independent.co.uk/independen...43034.html
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.
https://www.independent.co.uk/independen...43034.html