According to Professor Alex Welte from the SA Centre for Epidemiological Modelling and Analysis, immunity from vaccination may not last as long with the development of more Covid-19 variants.
said the initial Covid-19 jabs offer more than 75% protection from serious illness, hospitalisation and death. This protection can last for about six months.
“A number of 'real world' vaccine effectiveness studies have provided information on the duration of protection from different Covid-19 vaccines. Two doses of the major mRNA and adenovirus vaccines provided strong protection from serious illness,The emergence of the Omicron variant led to a recommended booster shot to extend protection, the organisations said. They advocated for a second booster to be given only to the immunocompromised.
“Early results indicate that protection against serious illness or death is maintained for many months or longer after a third vaccinationtold member states that the future of the vaccine should include reducing transmission and longer-lasting protection. “Innovation is needed to develop new vaccines that substantially reduce transmission, are easier to administer and give broader and longer-lasting protection.”
Previously, experts have suggested that an annual Covid-19 vaccination would be preferable to more frequent booster shots to fight the pandemic.
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