Dödligt virus från Kina orsakar panik (SARS-CoV-2, COVID-19)

1/ There is growing evidence that T-cell immunity allows populations to reach herd immunity once only 10-20% are infected with SARS-CoV-2.

This would explain why a highly transmissible virus in densely populated areas peaked at 10-20% infected regardless of lockdowns or masks.

2/ The pervasive misconception is that we have zero immunity against COVID-19. Based on this flawed understanding, epidemiologists projected that herd immunity is not reached until 60-70% are infected.

This is almost certainly wrong.

Of course, the media ignores this research

3/ While antibodies against COVID-19 may only last months, T cell immunity can remain protective for years.

In a study of 23 people who survived SARS in 2003, every single one had memory T cells that recognized the SARS virus 17 years later. (Nature)

4/ Moreover, blood samples from all 23 individuals showed “robust cross-reactivity” against SARS-CoV-2.

This can be called crossover immunity.

Crossover immunity is not limited to just people who were infected with SARS years ago though.

14/ It is likely that many of the hardest hit regions of the world (e.g. Lombardy, NYC, Madrid, London, Stockholm) are now at herd immunity.

Lockdowns & mask ordinances (mostly coming after the peak) likely had little effect, with the exception of perhaps prolonging the spread.

15/ Sweden is an example of what herd immunity looks like without lockdowns or masks.

Based on serology testing, ~20% of Stockholm was infected by April.

Deaths peaked in Sweden in April.

Today, the pandemic is over in Sweden with zero deaths per day & subsiding new infections

James Todaro, MD

Todaro, an ophthalmologist based in Michigan who is no longer practicing, graduated from Columbia University College of Physicians and Surgeons in 2014. His medical license, which was classified as "educational limited" in Michigan, expired in 2019.

According to his LinkedIn profile, Todaro has not practiced medicine since 2018. He co-founded an investment fund called Blockchain Capital.

Todaro authored a blog post in May that was among the first to expose flaws in the infamous Lancet study concluding that HCQ was associated with higher death rates in COVID-19 patients. Todaro's exposé, written on his website Medicine Uncensored, ultimately contributed to the study's retraction.

Previously, Todaro wrote a "white paper" in mid-March on chloroquine as prophylaxis and treatment for COVID-19, based on published information and linked in a Twitter post. Twitter has since marked it as "potentially spammy or unsafe."

Todaro did not respond to multiple requests for comment from MedPage Today.