JOHANNESBURG — A Johnson and Johnson COVID-19 vaccine booster shot is 85% efficient in defending towards being hospitalized by the Omicron variant for 1-2 months after it’s obtained, the top of South Africa’s Medical Analysis Council (SAMRC) stated on Friday.
Glenda Grey offered the findings of a SAMRC research at a South African well being ministry briefing on the COVID-19 fourth wave, which has been pushed by the brand new variant.
“We noticed an 85% vaccine effectiveness and we noticed that this sort of vaccine effectiveness is maintained for as much as two months,” she stated. “We’re very completely happy to report very excessive ranges of vaccine effectiveness towards Omicron.”
The research concerned 477,234 healthcare staff, all of them vaccinated with the J&J shot, of whom 236,000 — roughly half — had obtained the J&J booster shot.
It checked out hospitalizations amongst these healthcare staff who had been contaminated throughout the fourth wave, and located that the booster shot diminished hospitalizations by 63% within the first two weeks after the booster, going as much as 85% after that for between one and two months.
“That is the world’s first proof of vaccine effectiveness (towards Omicron) utilizing the J&J vaccine,” Grey stated.
The South African authorities have to this point maintained a choice for the Pfizer vaccine — they’ve administered 21 million doses, 3 times as many because the roughly 7 million J&J vaccine doses.
However the J&J shot is taken into account logistically way more preferable as a result of it’s a single-dose routine, which is simpler to manage in distant rural areas, the place follow-ups may be troublesome.
The information supported already robust international proof that Omicron can evade vaccine safety in relation to the preliminary an infection.
Among the many individuals within the research, there have been about 30,000 breakthrough infections throughout the Omicron wave, in contrast with solely round 11,000 every within the earlier waves pushed by the Delta and Beta variants.
The research additionally highlighted that these contaminated with HIV had been extra susceptible to being hospitalized with Omicron.
“They (these being hospitalized) usually tend to have HIV and fewer more likely to produce other comorbidities as in comparison with the Beta and Delta interval,” Grey stated.
HIV prevalence in South Africa is about 13%.
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