effective

Top health official fears vaccine is less effective against South African strain

The Johnson & Johnson vacuum is effective against 85% COVID-19 for graft cases

COVID Vaccine Update: Johnson & Johnson Vaccine 85% Effective Against Serious Diseases

Pfizer CEO: In future COVID-19 vaccines will not be effective

Novavax vaccine is 89% effective in the UK trial, but less so in South Africa

J & J’s Covid-19 Vaccine: How Effective Is It And When Will It Be Available?

Johnson & Johnson says the 1-shot COVID vaccine is effective in trials

Johnson & Johnson Covid-19 vaccine is 66% effective in worldwide trials, but 85% effective against serious diseases, says the company

J & J’s Covid vaccine is 66% effective, a weapon but not a knockout blow

Coronavirus live news: Novavax effective against British variant; Emirates stops flights to and from Britain on World News

Coronavirus vaccine from Novavax is 89.3% effective

Two Pfizer doses ‘are 99.96% effective’, research in Israel indicates