effective

Novavax vaccine is 89% effective against COVID-19 in UK study

Novavax says its Covid-19 vaccine is 89.3 percent effective

According to Novavax, the Covid-19 vaccine is 89 percent effective, but less against the South African variant

Novavax COVID vaccine is only 50 percent effective against new strain

Novavax says COVID-19 vaccine is 89% effective in the UK trial, less so in South Africa

Novavax vaccine is 89% effective against Covid-19 in UK study

According to Novavax, the drug is more than 89% effective

Painkillers before a COVID-19 vaccine may make it less effective

Do not take painkillers before you have COVID-19 vaccine, experts say and warn that it may make the shot less effective

Pfizer vaccine is only slightly less effective against important parts of the South African variant, the study finds

Pfizer vaccine effective against virus mutations in UK, South Africa, says company

Pfizer vaccine only slightly less effective against important S. African mutations: study