Having SARS-CoV-2 once confers much greater immunity than Pfizer vaccine

“The natural immune protection that develops after a SARS-CoV-2 infection offers considerably more of a shield against the Delta variant of the pandemic coronavirus than two doses of the Pfizer-BioNTech vaccine, according to a large Israeli study that some scientists wish came with a “Don’t try this at home” label. The newly released data show people who once had a SARS-CoV-2 infection were much less likely than vaccinated people to get Delta, develop symptoms from it, or become hospitalized with serious COVID-19.”

ScienceMag.org article


Data for ScienceMag article is from Medrxiv Preprint: Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections

“This study demonstrated that natural immunity confers longer lasting and stronger protection against infection, symptomatic disease and hospitalization caused by the Delta variant of SARS-CoV-2, compared to the BNT162b2 two-dose vaccine-induced immunity. Individuals who were both previously infected with SARS-CoV-2 and given a single dose of the vaccine gained additional protection against the Delta variant.”



Large UK study confirms previous Covid-19 infection often outperforms vaccine induced immunity

Image by Lothar Dieterich from Pixabay


Large UK study confirms previous Covid-19 infection often outperforms vaccine induced immunity

NO, we are ABSOLUTELY NOT recommending you try to get infected with Covid-19!

We’ve had the bug. This BSL4 bioweapon is a devastating beast and you could find yourself in an ICU hospital ward or dead if you try it! Do your best to avoid it all costs.

We are publishing this information so that you can make an informed decision if you have already been infected.

Remember that natural immunity will also fade over time – just think about how many times you have had the flu despite having had it before.

To repeat: Do NOT try to get infected naturally!

Impact of Delta on viral burden and vaccine effectiveness against new SARS-CoV-2 infections in the UK 


Vaccine waning studies show large declines in efficacy againt infection for Covid-19 vaccines

Turkey: 4th vaccination offered to health workers

Turkey’s Health Ministry has announced that health workers and priority groups are now eligible to receive a fourth dose of the COVID-19 vaccine as part of the country’s efforts to combat the resurgence of the disease.

The individuals in these groups who have previously had two doses of the Chinese-produced CoronaVac followed by one dose of the Pfizer/BioNTech vaccine as a booster shot will be able to get one more dose of the Pfizer/BioNTech vaccine.

On July 1 the Health Ministry started to offer a third dose of COVID-19 vaccines for people aged 50 and above and health workers who previously had two doses as part of its vaccination drive.

TurkishMinute.com report


280 cases of Delta variant with N501Y, some with E484K too





mage by Кирилл Соболев from Pixabay

mRNA vaccine booster dose antibodies – quantity not quality

“These results suggest that boosting vaccinated individuals with currently available mRNA vaccines would produce a quantitative increase in plasma neutralizing activity but not the qualitative advantage against variants obtained by vaccinating convalescent individuals.”

Biorxiv preprint: Antibody Evolution after SARS-CoV-2 mRNA Vaccination


Image by Johaehn from Pixabay

Israel: “85-90% of the hospitalizations are in fully vaccinated people”

Dr Kobi Haviv, Herzog Hospital, Jerusalem: “95% of the severe patients are vaccinated”. “85-90% of the hospitalizations are in fully vaccinated people.” “The effectiveness of the vaccine is waning/fading out”


Israel: 40% of new Covid cases are in children under 11yrs


Scotland: 70% of Covid deaths and 58% of hospitalizations are fully vaccinated



Israel: 5,770 vaccine breakthrough infections, 495 hospitalized, 123 died

The Israeli Health Ministry reported Thursday the efficacy of Pfizer’s coronavirus vaccine in preventing infection has dropped to 39% but the effectiveness in preventing severe illness still remains relatively high.

The report adds the efficacy of the vaccine in preventing serious illness has also dropped and now stands at 91%. The efficacy in preventing hospitalizations among vaccinated now stands at 88%.

5,770 people diagnosed with Covid-19 were fully vaccinated, 495 patients were hospitalized, 334 were hospitalized in a serious condition, and 123 died.

Ynet news report


Update 1:

Israel has already begun administering a third dose of Pfizer- BioNTech vaccine to adults with compromised immune systems.


Update 2:

In a separate surprising development, Israel has said it is moving away from the Pfizer vaccine and over to the Moderna vaccine


Update 3:

This Jerusalem Post article gives a credible explanation as to why Israel is reporting vaccine efficacy numbers that are different to those published by recent British studies:

“It is beginning to become clear that vaccine immunity begins to wane after about six months. The Israeli study showed that for people vaccinated more than six months ago, the effectiveness of the vaccine at stopping coronavirus dropped to as low as 16%.”


Israel: Pfizer vaccine effectiveness waning


So what is Plan B if the vaccines fail with a new #coronavirus super-variant?



Image by jorono from Pixabay

Pfizer and AstraZeneca vaccine antibodies start to wane after six weeks

Blood tests on hundreds of British people revealed that protective antibodies can wane substantially within weeks of second vaccine shots being given.

The UCL Virus Watch study found that antibodies generated by two doses of the Oxford/AstraZeneca and Pfizer/BioNTech vaccines started to wane as early as six weeks after the second shot, in some cases falling more than 50% over 10 weeks.

Guardian report


Israel: Pfizer vaccine effectiveness waning


Israel: 90% of confirmed Covid-19 cases in the over-fifties are fully vaccinated

Israel: Pfizer vaccine effectiveness waning

My colleagues @hillaalroy and @Meir_Marciano have tonight published the data leading the Israeli MoH to suspect that @pfizer vaccine’s immunity is waning.”


Israel: 90% of confirmed Covid-19 cases in the over-fifties are fully vaccinated


Image by Eduardo Castro from Pixabay

Israel: 90% of confirmed Covid-19 cases in the over-fifties are fully vaccinated

The Covid vaccine may be losing its efficacy in older people, researchers in Israel have warned. The monitoring team at the Hebrew University in Jerusalem reported that about 90 per cent of new confirmed cases in the over-fifties group were people who had been fully vaccinated. “It seems there’s a reduced efficiency of the vaccine, at least for part of the population,” the team said.

The Times report


UK: vaccine breakthroughs now nearly HALF of all new Covid-19 cases


Image by PublicDomainPictures from Pixabay

Israel: Previous Covid-19 infection may offer more protection than vaccination

People who have recovered from Covid-19 are around 9% of Israel’s population, but they’re less than 1% of current cases. That has led to speculation that recovery from past Covid is more protective against infection from the Delta Variant than vaccination. Known recovered people in Israel are mostly not vaccinated, though some chose to get a single booster dose

“There could be other explanations for this result. The Delta wave is, for now at least, not affecting the communities hardest hit by Israel’s previous Covid waves: Ultra Orthodox Jews and Israeli Arabs. So perhaps recovered people aren’t being exposed to the virus yet.

But I’m not sure that’s enough to explain the sharp difference. From data I was passed last week, recovered people were testing at only 0.1% positivity, compared to more than 1% for vaccinated people.

It’s clear that Delta is spreading in Israel’s vaccinated population. Vaccinated people are getting Delta, and — critically — vaccinated people are giving Delta to other vaccinated people.”

Report by Arieh Kovler


Israel: 56% of serious coronavirus cases in hospitals are fully vaccinated


UK: 60% of UK Covid-19 hospital cases are double vaccinated




Image by Tom Gordon from Pixabay

Pfizer Chief Scientific Officer: after six months there likely is the risk of coronavirus reinfection as antibodies wane

Pfizer Chief Scientific Officer Mikael Dolsten said the recently reported dip in the vaccine’s effectiveness in Israel was mostly due to infections in people who had been vaccinated in January or February. The country’s health ministry said vaccine effectiveness in preventing both infection and symptomatic disease fell to 64% in June.

“The Pfizer vaccine is highly active against the Delta variant,” Dolsten said in an interview. But after six months, he said, “there likely is the risk of reinfection as antibodies, as predicted, wane.”

Irish Times Report


Israel: Pfizer vaccine effectiveness against coronavirus infection has dropped to just 64%



Photo by Mika Baumeister on Unsplash

Israel: Hebrew University study finds Pfizer vaccine just 70% effective against Delta variant

In a separate report to the one we mentioned earlier where the efficacy of the Pfizer vaccine was estimated to be just 64%, a new study from the Hebrew University reports that the Pfizer vaccine is 70 percent effective against the new ultra-contagious Delta variant. This is compared to an approximately 95% rate of effectivity of the vaccine against earlier strains of COVID. According to the study, the Pfizer-BioNTech vaccine is also less effective at preventing people infected with the Delta variant from developing serious symptoms.

Times of Israel report


Israel: Pfizer vaccine effectiveness against coronavirus infection has dropped to just 64%


Image by neufal54 from Pixabay

Israel: Pfizer vaccine effectiveness against coronavirus infection has dropped to just 64%

From June 6 – five days after the abolition of all coronavirus restrictions in Israel – until Tuesday, the effectiveness of the [Pfizer] vaccine against corona infection dropped to only 64%. During this period of time there was also a similar decrease in the effectiveness of the vaccine with respect to the onset of symptoms of the disease, although it should be noted that these are only mild symptoms.

Either way, the effectiveness of the vaccine against serious illness or from hospitalization remains quite high. According to the data, between May 2 and June 5, the effectiveness of the vaccine in preventing hospitalization was 98.2%, but fell to 93% between June 6 and July 3 – a decrease of about five percent. A similar decrease was recorded during this time period also with regard to the effectiveness of the vaccine with regard to the development of severe coronavirus disease among vaccinated people. According to the Israeli Health Ministry, 55% of those infected from June 6th  were vaccinated.

Ynet.co.il report (in Hebrew)


Israeli Health Ministry: Vaccine down to 64% effectiveness in averting symptomatic COVID

Times of Israel report (in English)

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Israeli Health MInistry Statement


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