Can Covid shots make you more likely to get Covid?

June 2025

Numerous studies are now showing that as the covid boosters fade out it goes into negative territory. The studies listed below.

The shot can take from 4 to 7 months to fade out depending on studies you look at. Once the shot has faded to zero efficacy you then actually become more likely to get covid than a unvaxed person. And some of the studies also say "the more boosters you have the worse off you are" after a few months.

This is a reason health authorities are telling vulnerable people to get the covid shot every six months?

We were warned about getting repeated doses of this leaky, non-sterilizing vaccine way back in early 2022 when they were thinking about the 3rd dose. This article in EuroWeekly News, quotes the head of EMA research saying "too many boosters could have a negative effect on the immune system".

List of studies showing covid shot fading out to Negative efficacy.

This 2024 Japanese study says quote: "The study observed a higher reported incidence of COVID-19 infection among vaccinated individuals during the pandemic period, which increased with the number of vaccine doses received". 8 So your more likely to get covid after boosters than a unvaxed person, after your shot fades out.

Use word search function on your computer to find part I put in quotes.

This 2023 Cleveland Clinic study got more media attention and many tried to explain the results away with guesses rather than facts. It says under Results: "The risk of COVID-19 also increased with time since the most recent prior COVID-19 episode and with the number of vaccine doses previously received". 2

So as the shot fades over time, the more boosters you have the more likely you are to get covid. And before the shot faded out it was only 29% effective it says, and the XBB even less so.

This and some other studies listed here suggest immune imprinting as a possible roll in the negative effectiveness of the shots.

Here is another Cleveland Clinic study done a year later Aug 2024 by same authors. Says "Risk of COVID-19 was lower among those previously infected with an XBB or more recent lineage and increased with the number of vaccine doses previously received".

This 2022 Iceland study says "The probability of reinfection increased with time from the initial infection, and was higher among persons who had received 2 or more doses compared with 1 dose or less of vaccine". The difference was small, but this study was Aug 2022, so still early, boosters were just starting. 3

This July 2022 UK study says "We observed negative vaccine effectiveness (VE) for the third dose since December 20, 2021, with a significantly increased proportion of SARS-CoV2 cases hospitalizations, and deaths among the vaccinated". 6

Here is a June 2022 from Qatar published in Nature, says "Vaccine effectiveness reached small but statistically significant negative values at 7 months or more after the second dose".

Also says effectiveness goes down to negligible levels after 4 months. 7

This July 2023 study also from Qatar a year later, done by same authors as above is published in the Lancet. Says the vaccine gave 75% protection against severe disease, but poor protection against infection, and by the 7th month effectiveness was progressively negative. So more likely to get covid than a unvaxed person. 11

Here is a Nov 2023 study from Austria. Says "infection risk with four vaccinations was higher compared to less vaccinated individuals during extended follow-up until June 2023". So negative effectiveness kicked in around 6 to 7 months. 12

This 2021 study in Nature, says quote: "Overall, fully vaccinated cases were significantly more likely than unvaccinated cases to be infected by resistant variants"

Also says "and symptomatic vaccine breakthrough infections had similar viral loads to unvaccinated infections". 1

This Feb 2025 study funded by the US dept of Veteran Affairs says effectiveness of the XBB.1.5 2023/2024 vaccine was minus 3.2% after 6 months. If the study had continued to 10 months, would the negative effect be larger?

The Conclusion of the study says "COVID-19 vaccines targeting the XBB.1.5 variant of Omicron were not effective in preventing infection and had relatively low VE against hospitalization and death, which declined rapidly over time. Worth the risk? 99

This study from Georgia, now peer reviewed, says the covid shot was negative 9% effective after 60 days during Omicron phase. What was it like after 6 months?

IMPORTANT POINTS

This Feb 2025 MMWR report from the CDC says Vaccine effectiveness of 2024–2025 COVID-19 vaccine was 33% against COVID-19–associated emergency department or urgent care visits among adults aged ≥18 years and 45%–46% against hospitalizations among immunocompetent adults aged ≥65 years.

This is pretty dismal, not the 95% touted when shot first came out.

Note that none of their studies went beyond 4 months. Is that because they know the shots go negative effectiveness soon after that? And notice the poor effectiveness, even against hospitalizations. The shots are getting less effective every year? The WHO quit recommending covid shots for healthy people under age 60 over 2 years ago. Not worth the risk?

Real world evidence of how poorly the covid shot is working.

This Oct 2023 NBC News article describes how some people have gotten covid up to 5 and 6 times. They're all vaxed, article describes one person you got covid a 5th time, 6 months after their last booster and they were very sick.

None of these same people got measles, because that is a good vaccine and the virus not always changing. The covid shot is not worth it unless you get it every 4 to 6 months, but could that also cause more problems? No good science on this. The studies above show the shot may be less effective each time you take it.

And the shot does have risk.

Another article here, from a health care advisory board, also describes many who got covid up to 5 times, and some very sick. Said all but one of the people they interviewed had at least 1 booster. This is same source as NBC article.

-The best real world evidence is just look around you. How many of your vaccinated friends have had covid after being vaccinated? Most of them? And how many of them had chicken pox or measles after being vaxed? None?

Forgetting science for a minute, we can just look at all the vaccinated people we know, almost all have had covid 1 to 3 times or more, some very sick, those same people are not getting measles or chicken pox as those vaccines work. So is the covid shot is worth risking?