COVID vaccine after natural infection. Is it needed ?

In this video, I address a recent study that the CDC and news outlets were widely reporting that indicated the previously infected unvaccinated people are more than twice as likely to catch COVID than previously infected vaccinated people. Is this really true though? I go through the study and outline all of the limitations of this observational small study. I also talk about a recent observational data from the Israeli Health Ministry indicating that during the Delta surge they found opposing results. Physician researchers are finally talking about natural immunity and the protection that it provides to those who unfortunately acquired it.

LInk to Kentucky study - https://www.cdc.gov/mmwr/volumes/70/wr/mm7032e1.htm?s_cid=mm7032e1_w

Link to Newsweek article - https://www.newsweek.com/does-natural-immunity-covid-19-offer-better-protection-getting-vaccine-1617541

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.