COVID: Immunity protected more than vaccines during delta wave in the US, says study

During the last wave of coronavirus in the United States driven by the delta variant, unvaccinated people but who survived COVID were better protected than those who were vaccinated and were not infected before, according to a new study published Wednesday.

The finding adds to the debate about the relative strengths of natural immunity compared to that acquired through the SARS-CoV-2 vaccine, and is endorsed by the federal agency the Centers for Disease Control and Prevention. Disease Control and Prevention (CDC) of the United States.

However, the paper’s authors cautioned against relying on infection as a strategy to acquire immunity given the higher risk of hospitalization, long-term impacts, and death in unvaccinated people, compared to those who do get vaccinated.

“The level of protection offered by vaccination and survival from a previous infection changed during the study period.

Vaccination remains the safest strategy to protect against COVID-19,” the CDC said in a statement.

The analysis was done before booster injections became widely available and also before the appearance of the variant omicron, for which both immunity of the vaccine as that of the previous infection, they seemed to decrease.

The new study involved patients in New York and California between May 30 and November 30 of 2021.



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