There are 4 circulating coronaviruses predating COVID-19 that cause up to 30% of seasonal upper respiratory tract infections (8). The spike proteins of β-coronaviruses HKU1 and OC43 exhibit approximately 40% sequence similarity, whereas the α-coronaviruses NL63 and 229E exhibit approximately 30% structural similarity with SARS-CoV-2 (9). The common occurrence of circulating coronaviruses year after year and their structural similarity with SARS-CoV-2 raises the possibility that the former may stimulate cross-reactive responses toward SARS-CoV-2 and that this heterotopic immunity may impact clinical susceptibility to COVID-19 and/or modulate responses to the SARS-CoV-2 vaccine (10, 11)….In conclusion, this study reveals common preexisting, broadly reactive SARS-CoV-2 antibodies in uninfected adults. These findings warrant larger studies to understand how these antibodies affect the severity of COVID-19, as well as the quality and longevity of responses to SARS-CoV-2 vaccines.
We are living in a world where anything “natural” seems to be shunned by a large portion of the medical community, and defined as “pseudoscientific”, when in fact, research suggests the opposite.
Natural immunity is quite robust. Dr. Suneel Dhang, an internal medical physician in the United States explains,
I’m not aware of any vaccine out there which will ever give you more immunity than if you’re naturally recovered from the illness itself…If you’ve naturally recovered from it, my understanding as a doctor level scientist is that those antibodies will always be better than a vaccine, and if you know any differently, please let me know....<<<Read The Full Article Here>>>...