Thursday, June 10, 2021

Is Covid-19 Natural Immunity Long Lasting?

As a forward, I'm not a doctor and am not providing medical advice. I'm simply posting studies from top hospitals around the world.

Is myocarditis a real vaccine side effect? 
  • "Pfizer and Moderna mRNA COVID-19 vaccines were associated with an excess risk of serious adverse events of special interest of 10.1 and 15.1 per 10,000 vaccinated over placebo baselines."
  • "Post COVID-19 infection was not associated with either myocarditis or pericarditis." 
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9025013/
  • "It is now clear for men <40, dose 2 and dose 3 of Pfizer have more myocarditis than sars-cov-2 infection, and this is true for dose 1 and dose 2 of Moderna."
https://vinayprasadmdmph.substack.com/p/uk-now-reports-myocarditis-stratified?utm_source=url
  • “The largest and most comprehensive analysis to date, we confirmed prior findings and reported an increase in hospital admission or death from myocarditis following three different types of vaccine.”
  • "Their analysis of medical data suggests that boys aged 12 to 15, with no underlying medical conditions, are four to six times more likely to be diagnosed with vaccine-related myocarditis than ending up in hospital with Covid over a four-month period"

Can Vaccinated People Acquire and Spread Covid-19? 
  • From the European Journal of Epidemiology: "Increases in COVID-19 are unrelated to levels of vaccination across 68 countries and 2947 counties in the United States."
https://link.springer.com/article/10.1007/s10654-021-00808-7
  • A study in England showed that the vaccinated population accounted for 94% of all Covid-19 deaths between January and May, 2022.
https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/datasets/deathsbyvaccinationstatusengland
  • "A new study from the University of California, Davis, Genome Center, UC San Francisco and the Chan Zuckerberg Biohub shows no significant difference in viral load between vaccinated and unvaccinated people who tested positive for the delta variant of SARS-CoV-2. It also found no significant difference between infected people with or without symptoms"
https://www.ucdavis.edu/health/covid-19/news/viral-loads-similar-between-vaccinated-and-unvaccinated-people
  • "According to the study published in The Lancet Infectious Diseases journal, people who contracted COVID-19 had a similar viral load regardless of whether they had been vaccinated. The study further found that 25 percent of vaccinated household contacts contracted COVID-19. while 38 percent of unvaccinated individuals were diagnosed with the disease."
https://thehill.com/policy/healthcare/579068-vaccinated-just-as-likely-to-spread-delta-variant-as-unvaccinated-study

Does vaccine efficacy fade over time?
  • According to Reuters: "Six months after receiving the second dose of the two-shot vaccine from Pfizer Inc and BioNTech SE, many recipients no longer have vaccine-induced antibodies that can immediately neutralize worrisome variants of the coronavirus, a new study suggests."
https://news.trust.org/item/20211001194329-xkwip
  • "The UK Health Security Agency said those who had received three doses of Pfizer’s vaccine saw their protection against symptomatic illness caused by the variant drop from 70 percent to 45 percent within 10 weeks."
  • "In late July, an Israeli study pegged the Pfizer vaccine at only 39 percent effective against recent COVID-19 infections. The data came out before many institutions and companies implemented vaccine mandates for employees and students. Now we know that American data is no better. The Mayo Clinic estimates the Pfizer vaccine has prevented COVID infection in 42 percent of recipients since July 1st" (Link). 

Does Natural Immunity offer any protection?
  • From Yahoo News: "The largest real-world analysis comparing natural immunity and the protection provided by coronavirus vaccines revealed those who have received both jabs of Pfizer’s two-stick shot were almost six-fold more likely to contract a delta infection and seven-fold more likely to show symptoms and become hospitalized than those who have already recovered from COVID."
https://news.yahoo.com/contracting-beating-covid-provides-better-165600200.html 
  • One major study from July, 2021 - funded partially by the National Institutes of Health, says that those who survived covid-19 "are likely to also possess protective immunity even against SARS-CoV-2 variants" 
https://news.emory.edu/stories/2021/07/covid_survivors_resistance/index.html
  • One breaking new study from the Cleveland Clinic (ranked #2 in overall hospitals by US News) states that people who beat covid-19 naturally won't benefit from the vaccine 
  • "MIAMI (CNN) — When people got reinfected with COVID-19, their odds of ending up in the hospital or dying were 90% lower than an initial COVID-19 infection, according to a new study. The study published Wednesday in the New England Journal of Medicine found that there were few confirmed reinfections among 353,326 people who got COVID-19 in Qatar, and the re-infections were rare and generally mild."
https://miami.cbslocal.com/2021/11/26/study-covid-19-reinfection-rare-severe-disease-even-rarer/
  • From the NY Times: "Important immune cells survive in the bone marrow of people who were infected with the virus or were inoculated against it, new research suggests."
https://www.nytimes.com/2021/05/26/health/coronavirus-immunity-vaccines.html
  • From Nature: "Overall, we show that SARS-CoV-2 infection induces a robust antigen-specific, long-lived humoral immune response in humans."
  • According to one major study done in Israel, reinfection and hospitalization was HIGHER in vaccinated people than those who beat the virus naturally.
  • Nature cites another study from Rockefeller University: "Researchers are identifying other factors that could make existing vaccines more resilient, such as mimicking how natural immunity caused by infection can sometimes offer broad protection. For instance, Bieniasz’s team found that some people who recover from COVID-19 make antibodies that, over time, become more capable of blocking diverse coronavirus variants."

But what about those who had asymptomatic covid?
  • "Moss said the finding that the T cell response was 50% higher in those who had experienced symptoms did not necessarily mean that asymptomatic people may be more susceptible to reinfection as they may just be better at fighting off the virus without the need to generate a large immune response."
https://www.bmj.com/content/371/bmj.m4257

More Studies:
  • "A rate of natural immunisation [from beating the virus naturally] of virtually 100% over 12 months, compared with a rate of effectiveness of a maximum 95% for recently approved vaccines which have been tested for between three and six months" (Link). "Those who are recovered therefore have immunity at least equivalent to that from the new vaccines" (Link 1)(Link 2).
  • According to one study, "Cumulative incidence of COVID-19 was examined among 52238 employees in an American healthcare system. COVID-19 did not occur in anyone over the five months of the study among 2579 individuals previously infected with COVID-19, including 1359 who did not take the vaccine" (Link).
  • "We show that SARS-CoV-2 infection elicits broadly reactive and highly functional memory T cell responses that persist 6 months after infection. In addition, recovered individuals show enduring immune alterations in CD4+ and CD8+ T cells compartments" (Link).

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