New US studies released on Friday show unvaccinated people are 11 times more likely than vaccinated people to die from Covid-19.
Besides, the fully vaccinated people are 10 times less likely to be hospitalised compared to the unvaccinated individuals, according to one of the three studies published by the Centers for Disease Control and Prevention (CDC).
For reasons that are not yet well understood, data from one of the studies suggests Moderna's vaccine has offered a slightly higher level of protection in the Delta period.
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It comes a day after President Joe Biden announced an aggressive new immunization plan that includes requiring companies employing more than 100 people to either vaccinate their workers or test them weekly.