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COVID vaccines

Moderna's COVID-19 vaccine shows promise against Delta variant

Study indicates only modest decrease in response compared to original strain

Moderna's vaccine is far more effective at producing antibodies against the Delta variant than against the Beta variant first identified in South Africa, data shows.   © Reuters

Moderna Inc's COVID-19 vaccine showed promise against the Delta variant first identified in India in a lab study, with a modest decrease in response compared to the original strain, the drugmaker said on Tuesday.

The study was conducted on blood serum from eight participants obtained one week after they received the second dose of the vaccine, mRNA-1273.

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