Newest COVID-19 shots 54 per cent effective in preventing symptoms: U.S. study
The latest versions of COVID-19 vaccines were 54% effective at preventing symptomatic infection in adults, according to the first U.S. study to assess how well the shots work.
The latest versions of COVID-19 vaccines were 54% effective at preventing symptomatic infection in adults, according to the first U.S. study to assess how well the shots work.
