effective

Nachman Ash says that the first dose of Pfizer is less effective than indicated

Boston doctor says COVID-19 interventions should be more effective

Russia’s second vaccine ‘100% effective’, watchdog tells media

Sinovac says its COVID-19 vaccine is more effective with longer dosage intervals

Sinovac says its COVID-19 vaccine is more effective with longer dosage intervals

How effective is a single dose of Covid-19 vaccine?

If you have these conditions, your COVID vaccine may be less effective

China’s CoronaVac vaccine 50 percent effective, new trials have found

Results of China’s Sinovac vaccine trial far less effective than initially claimed in Brazil

The Chinese Covid-19 vaccine is much less effective than initially announced in Brazil

How effective is China’s Sinovac Shot? Covid vaccine data unclear

BioNTech’s CEO says the vaccine is effective against new strains