“Scientists are now showing evidence that up to 81% of us can mount a strong response to COVID-19 without ever having been exposed toit before:
Cross-reactive SARS-CoV-2 T-cell epitopes revealed preexisting T-cell responses in 81% of unexposed individuals, and validation of similarity to common cold human coronaviruses provided a functional basis for postulated heterologous immunity.
This alone could explain WHY the Herd Immunity Threshold (HIT) is so much lower for COVID-19 than some scientists thought originally, when the number being talked about was closer to 70%. Many of us have always been immune!“
As the author points out, we should have known from the incident on the Diamond Princess (Cruise Liner) that immunity was far more widespread than previously thought. Readers might recall that only 17%of the people on board tested Covid-positive, “despite an ideal environment for mass spread, implying 83% of the people were somehow protected from the new virus.”
Think about that for a minute. All of the passengers were 60 years old or older, but only 17% caught the virus. Why?
Immunity, that’s why. What else could it be? Cross immunity, natural immunity, or SARS-CoV-2 T-cell immunity. Whatever you want to call it,it exists and it explains why the vast majority of people will not get the highly-contagious Covid no matter what they do.