Washington: Fully vaccinated people were 11 times less likely to die of Covid and 10 times less likely to be hospitalized compared to the unvaccinated since highly contagious Delta became the foremost common variant, US health authorities said FridayThe data came from one among three new papers published by the Centers for Disease Control and Prevention, all of which underscored Covid vaccines’ ongoing effectiveness against severe outcomes.
For reasons that aren’t yet well understood, data from one among the studies suggests Moderna’s vaccine has offered a rather higher level of protection within the Delta period It comes each day after President Joe Biden announced an aggressive new immunization plan that has requiring companies employing quite 100 people to either vaccinate their workers or test them weekly.
“As we’ve shown in study after study, vaccination works,” said CDC director Rochelle Walenksy during a press briefing on Friday The first study examined many thousands of cases in 13 US jurisdictions from April 4 – June 19, the amount before Delta was dominant, and compared them to June 20 – July 17.
Between these periods, a vaccinated person’s risk of Covid infection rose slightly: from being 11 times less likely to be infected compared to an unvaccinated person, to 5 times less likely Protection against hospitalization and death remained more stable, but fell more among people aged 65 and above than for younger age groups.
The CDC and therefore the Food and Drug Administration are assessing the necessity for booster shots, and it’s likely the elderly are going to be among the primary to receive them when the Biden administration starts to roll them out later this month One of the studies, which assessed vaccine effectiveness from June-August at quite 400 hospitals, emergency departments and urgent care clinics, stratified efficacy by brand Efficacy against hospitalization was highest for Moderna at 95 percent; then Pfizer at 80 percent; and eventually Johnson & Johnson at 60 percent.
Overall efficacy against hospitalization was 86 percent for all age groups but this fell to 76 percent for those over 75 The two mRNA vaccines, Pfizer and Moderna, have always performed slightly better than the J&J adenovirus vector vaccine — possibly because the latter is run together dose.
It isn’t clear why Moderna’s vaccine appears to possess a small edge on Pfizer within the Delta period It might be linked to its higher dosing level of 100 micrograms versus 30 micrograms, or possibly the greater interval between the primary and second shots (four versus three weeks), which could be related to a heightened immune reaction .
