US CDC Study: With the worldwide vaccination campaign resuming, here is a new study highlighting fully vaccinated people suggesting they are 11 times less likely to die from Covid and 10 times less likely to be hospitalized compared to unvaccinated people.
The results are taken from one of three new articles published by the Centers for Disease Control and Prevention and shared by U.S. health authorities. Studies have focused on the effectiveness of Covid vaccines against severe consequences at a time when the highly contagious Delta has become the most common variant, according to the AFP news agency.
About 41.5% of the world’s population has received at least one dose of a Covid-19 vaccine, according to ourworldindata estimate.
What are the conclusions?
One of the studies suggests that Moderna’s vaccine offered a slightly higher level of protection during the Delta period. However, the reasons are not yet fully understood. The study comes after President Joe Biden proposed an aggressive new vaccination plan that called on companies employing more than 100 people to vaccinate or test their workers every week.
During a press briefing, CDC director Rochelle Walenksy said studies have shown vaccination to work. The first study focused on cases in 13 U.S. jurisdictions from April 4 to June 19, the period before Delta dominated, and compared them to June 20 to July 17.
He found that between these periods, a vaccinated person’s risk of Covid infection increased slightly: from 11 times less likely to be infected compared to an unvaccinated person, to five times less likely.
Efficacy against hospitalization was highest for Moderna at 95%; then 80% Pfizer; and finally Johnson & Johnson at 60 percent, according to the report. The overall effectiveness against hospitalization was 86 percent for all age groups but fell to 76 percent for those over 75.
While protection against hospitalization and death has been found to be more stable but has declined among people aged 65 and over than for younger age groups.
The CDC and the Food and Drug Administration are investigating the option of booster shots, and its likely seniors will be among the first to receive them when the Biden administration begins rolling out them later in September.