What do we know about natural immunity to COVID? In this video I will talk about a number of studies looking at natural immunity to COVID looking at different variants. What type of immunity, vaccine versus natural is the best? How long does the different types of natural immunity to COVID last? How well do the Pfizer and Moderna vaccines work against the variants are briefly covered. These questions and more are answered in this video.
Cleveland clinic study:
USA reinfection study:
Nature study:
Natural immunity antibody response up to 12 months study:
South African variant antibody neutralization study:
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Dr. Keith Moran MD, RCPSC, DABIM, RCS, NBE Biography:
I am a consultant in Internal Medicine with special medical interests in gastroenterology, cardiology, and echocardiography. I am a a full-time practising physician in these areas. I was an undergraduate at the University of Toronto, Trinity College where I received a number of scholarships including one for top student at Trinity College. I attended medical school at the University of Toronto graduating with a gold medal. My internship was completed at McMaster University in Hamilton followed by a residency in Internal Medicine at the University of Western Ontario in London. I then completed a fellowship in General Internal Medicine at the University of Western Ontario. I am an active echocardiographer who has been certified and recertified by the National Board of Echocardiography. I am certified in cardiac sonography and have trained and completely educated a number of cardiac sonographers. I am the medical director of my cardiology laboratory which was established in 2001. My laboratory performs echocardiography and stress echocardiography amongst other tests. I maintain my certification in the American Board of Internal Medicine.
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