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Vaccines Maybe Less Effective Against Omicron, Pharma Makers Warn

Omicron vaccines Existing vaccines less effective against Omicron strain. Credit: Public domain

Existing vaccines may be less effective against the Covid-19 Omicron variant, the CEO’s of Moderna and Pfizer admitted on Monday.

Speaking to the Financial Times, the CEO of Moderna warned that it would take months before pharmaceutical companies could manufacture new variant-specific jabs at scale.

He added that the high number of Omicron mutations on the spike protein, which the virus uses to infect human cells, and the rapid spread of the variant in South Africa suggested that the current crop of vaccines may need to be modified next year.

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