Natural immunity better protects against the Delta strain of COVID-19 than a vaccine, according to a study released by the Centers for Disease Control and Prevention (CDC) on Wednesday.
Researchers examined COVID-19 cases and hospitalizations from May through November 2021 in California and New York. The research team examined case and hospitalization rates among four cohorts of people: the unvaccinated and previously uninfected, the vaccinated and previously infected, the unvaccinated with a previous COVID-19 diagnosis, and the vaccinated with a previous COVID-19 diagnosis.
The study found that the natural immunity obtained through recovering from a bout of COVID-19 gave people a much greater degree of protection against the Delta strain of COVID-19 than receiving a COVID-19 vaccine. The study said:
By the week beginning October 3, compared with COVID-19 cases rates among unvaccinated persons without a previous COVID-19 diagnosis, case rates among vaccinated persons without a previous COVID-19 diagnosis were 6.2-fold (California) and 4.5-fold (New York) lower; rates were substantially lower among both groups with previous COVID-19 diagnoses, including 29.0-fold (California) and 14.7-fold lower (New York) among unvaccinated persons with a previous diagnosis, and 32.5-fold (California) and 19.8-fold lower (New York) among vaccinated persons with a previous diagnosis of COVID-19. During the same period, compared with hospitalization rates among unvaccinated persons without a previous COVID-19 diagnosis, hospitalization rates in California followed a similar pattern. These results demonstrate that vaccination protects against COVID-19 and related hospitalization, and that surviving a previous infection protects against a reinfection and related hospitalization. Importantly, infection-derived protection was higher after the Delta variant became predominant, a time when vaccine-induced immunity for many persons declined because of immune evasion and immunologic waning (2,5,6).See link above
With early vaccination and outstanding data, country is the world’s real-life COVID-19 lab
“Now is a critical time,” Israeli Minister of Health Nitzan Horowitz said as the 56-year-old got a COVID-19 booster shot on 13 August, the day his country became the first nation to offer a third dose of vaccine to people as young as age 50. “We’re in a race against the pandemic.”Continue at link below
His message was meant for his fellow Israelis, but it is a warning to the world. Israel has among the world’s highest levels of vaccination for COVID-19, with 78% of those 12 and older fully vaccinated, the vast majority with the Pfizer vaccine. Yet the country is now logging one of the world’s highest infection rates, with nearly 650 new cases daily per million people. More than half are in fully vaccinated people, underscoring the extraordinary transmissibility of the Delta variant and stoking concerns that the benefits of vaccination ebb over time.