Vaccines Doesn't Reduce Peak Viral Load When Infected With Delta Variant, UK Study Suggests

Those who caught the Delta Variant of the CCP virus after being fully vaccinated carry a similar level of peak viral burden with their unvaccinated counterparts, a new UK analysis suggests.

"A greater percentage of virus may be non-viable in those vaccinated, and/or their viral loads may also decline faster as suggested by a recent study of patients hospitalized with Delta, leading to shorter periods 'at risk' for onwards transmission," the preprint reads.

Three CCP virus vaccines are currently available in the UK: Pfizer/BioNTech, which was rolled out on Dec. 8 last year; Oxford-AstraZeneca, which was rolled out on Jan. 4 but is no longer recommended for under-40s since May 7; and Moderna, which was available since Apr.

The study said that limited real-world data suggest one dose of Moderna vaccine seemed to be more effective than one dose of Pfizer or AstraZeneca vaccine, but the result may be biased because the average age of people who received Moderna vaccines is younger because the vaccine wasn't available when the older population were vaccinated.

Researchers also said that data suggest two doses of either Pfizer or AstraZeneca vaccine "Still provided at least the same level of protection as having had COVID-19 before through natural infection" and that the vaccines have boosted natural immunity.

The efficacy of Pfizer or AstraZeneca vaccines in preventing infections had slipped to 75 percent and 61 percent respectively 90 days after a second shot, the study found.

The researchers would not project how much more the effectiveness would drop over time but suggested that the efficacy of the two vaccines studied would converge within 4-5 months after the second shot.
 

https://www.theepochtimes.com/vaccines-doesnt-reduce-peak-viral-load-when-infected-with-delta-variant-uk-study-suggests_3955997.html