CDC Studies Show Vaccine Protection Wanes Over Time By Brian Simpson
Here is a concise outline of some studies released last week by the US CDC, which indicate that the COVID vaccine effectiveness against infection has decreased over time, and that the vaccines are less effective in dealing with the Delta variant. Another study by University of Oxford scientists found people who contract the Delta variant after being fully vaccinated carry a similar viral load as those who catch the disease and are unvaccinated. Hence, the vaccinated are just as contagious as the unvaccinated. As I see it, this completely collapses the present Australian government narrative on Covid, both vaccinations and lockdowns.
All of this will pose a problem for the Sco Mo road to recovery, since it could mean that even after a high vaccination rate is achieved, we will we going back into endless cycles of lockdown. Perhaps only World War III will break this cycle.
“Three studies released Wednesday by the CDC confirm COVID vaccine effectiveness against infection has decreased over time, and is less effective in combating the Delta variant.
One study assessed Pfizer and Moderna’s effectiveness over time against infections among nursing home residents, and found it dropped from 75% pre-Delta to 53% when Delta became dominant. The study didn’t differentiate between asymptomatic, symptomatic and severe infections.
Another study used data from 21 hospitals to estimate the effectiveness of Pfizer and Moderna mRNA vaccines against hospitalization over time. Among 1,129 patients who received two doses of a mRNA vaccine, vaccine effectiveness was 86% 2 to12 weeks after vaccination and 84% at 13 to 24 weeks.
The third study, using New York state data, found all three vaccines’ effectiveness against infection dropped from 92% in early May to 80% at the end of July, but the effectiveness against hospitalization remained relatively stable.
Data from the three reports in the CDC’s Morbidity and Mortality Weekly Report, helped convince the Biden administration to recommend booster shots to people eight months after receiving their second dose, despite no completed late-stage clinical trials assessing the safety, efficacy and immunogenicity of a third dose.
Oxford study shows vaccinated just as contagious as unvaxxed
As The Defender reported Thursday, a British public health study released Aug. 16, indicates vaccinated people with “breakthrough” infections could pose a significant infection risk to those who have not been vaccinated.
A study by University of Oxford scientists found people who contract the Delta variant after being fully vaccinated carry a similar amount of the virus as those who catch the disease and have not been vaccinated.
The study also found protection was greatest in those vaccinated who already had natural immunity through previous infection.
Based on more than 3 million nose and throat swabs, Oxford University researchers found that 90 days after a second shot of the Pfizer or Astrazeneca vaccine, efficacy in preventing infections had slipped to 75% and 61% respectively.
Those results were down from 85% and 68%, respectively, seen two weeks after a second dose, with the decline in efficacy more pronounced among those 35 years and older.
The study also showed that after two doses of the Pfizer vaccine, effectiveness was at least as great as protection afforded by natural infection — with greater initial effectiveness against new PCR-positives but faster declines in protection against high viral burden and symptomatic infection.
Researchers said there was no evidence effectiveness varied by dosing interval, but protection was higher among those vaccinated who already had natural immunity.
The survey, which has yet to be peer-reviewed before publication in a scientific journal, underscores concerns by scientists that the Delta variant can infect fully vaccinated people at a greater rate than previous variants, and that the vaccinated could more easily transmit it.”
https://www.axios.com/coronavirus-vaccine-data-cdc-biden-d6f295f2-5205-4c44-bdf3-f7eab66b4873.html
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