How Deadly Is Covid? A Major Study Defies Conventional Wisdom

Guest Post by Will Jones

COVID-19 is much less deadly in the non-elderly population than previously thought, a major new study of antibody prevalence surveys has concluded.

The study was led by Dr. John Ioannidis, Professor of Medicine and Epidemiology at Stanford University, who famously sounded an early warning on March 17th, 2020 with a widely-read article in Stat News, presciently arguing that “we are making decisions without reliable data” and “with lockdowns of months, if not years, life largely stops, short-term and long-term consequences are entirely unknown, and billions, not just millions, of lives may be eventually at stake.”

In the new study, which is currently undergoing peer review, Prof. Ioannidis and colleagues found that across 31 national seroprevalence studies in the pre-vaccination era, the average (median) infection fatality rate of COVID-19 was estimated to be just 0.035% for people aged 0-59 years people and 0.095% for those aged 0-69 years.

A further breakdown by age group found that the average IFR was 0.0003% at 0-19 years, 0.003% at 20-29 years, 0.011% at 30-39 years, 0.035% at 40-49 years, 0.129% at 50-59 years, and 0.501% at 60-69 years.

The study states that it shows a “much lower pre-vaccination IFR in non-elderly populations than previously suggested”.

A breakdown by country reveals the wide range of IFR values across different populations.

Infection fatality rate (IFR) and 95% confidence interval per country for people under 70 years old.

The significantly higher values for the top seven suggest some of the difference may be an artifact of, for example, the way Covid deaths are counted, particularly where excess death levels are similar. Note also that the antibody studies date from various points during the first year of the pandemic, most of them prior to the large winter wave of 2020-21, when levels of spread and numbers of deaths were more varied than later in the pandemic as subsequent waves caused countries to converge.

The reason some countries had much lower values and some much higher is not completely clear. The authors suggest that “much of the diversity in IFR across countries is explained by differences in age structure,” as per the plot below.

Meta-regression of IFR as a function of the proportion of the population under 50 years old among those 0-69 years old.

However, the age breakdown by country suggests that the IFR differed for each age group in each country, casting doubt on that suggestion. (In the chart below, note the logarithmic scale, and ignore the zig-zag lines, which are due to small countries having low numbers of deaths.)

IFR in each country per each specified age bin

Why are countries seeing differing IFRs even for the same age groups? The authors suggest a number of explanations, including data artefacts (e.g. if the number of deaths or seroprevalence are not accurately measured), presence and severity of comorbidities (for example, obesity affects 42% of the US population, but the proportion of obese adults is only 2% in Vietnam, 4% in India and under 10% in most African countries, though it affects almost 40% of South African women), the presence of frail individuals in nursing homes and differences in management, health care, overall societal support and levels of drug problems.

Prof. Ioannidis has previously published a number of papers estimating COVID-19’s IFR using seroprevalence surveys. He and his team conclude that their new estimates provide a baseline from which to assess further IFR declines following the widespread use of vaccination, prior infections and evolution of new variants such as Omicron.

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8 Comments
MrLiberty
MrLiberty
November 7, 2022 5:55 pm

Scamdemic, shamdemic, plannedemic…..crimes against humanity. NEVER FORGET, NEVER FORGIVE.

Anonymous
Anonymous
  MrLiberty
November 7, 2022 7:01 pm

Never relax.

Iska Waran
Iska Waran
November 7, 2022 6:20 pm

It was supposed to kill all the fat people.

MrLiberty
MrLiberty
  Iska Waran
November 7, 2022 6:53 pm

And the old ones too.

Anonymous
Anonymous
November 7, 2022 6:59 pm

It doesn’t exist.

Propaganda-induced hysteria and totalitarianism are deadly, however.

Anonymous
Anonymous
  Anonymous
November 7, 2022 9:00 pm

Yep. The symptoms were a catch-all. Most actual deaths came from the treatment protocols in hospital. And this was no different than the flu (except for the unseasonal summer surge right after the shots were rolled out). Plus viral contagion theory is far from scientifically sound.

As a data professional the first thing I always look at in charts and studies like these is the scale of the data. Here the range between the highest and lowest IFRs is only a couple tenths of a percent. That’s called random variance.

So the real story is not ‘why was it worse in some countries?’ but rather ‘why is the IFR indistinguishable from the all-cause death baseline rate by age?

We do ourselves no favors buying the big lie in order to contest the details.

Jocko
Jocko
November 8, 2022 5:58 am

Covid isn’t deadly, the medical establishment trying to stop the spread and treat you for covid is deadly though.

The Duke of New York
The Duke of New York
November 8, 2022 11:32 am

I’ve seen multiple hundreds of elderly (70+) covid cases since January 2020, nearly all of them had mild symptoms and did not require hospitalization or medical intervention, and were back to baseline in less than a week.

In truth I have seen far more flu deaths than covid deaths in this population.