Completely anecdotal, but for what it's worth; was able to get the Navy to fly me to India to get the Covaxin shots (as they forced me under pain of career elimination to get unnecessary shots). I wasn't taking a gene therapy concoction under any circumstances. My wife and kids are all pure bloods; 3 months after shot 2, we all got coronavirus the same day, same severity and duration of symptoms, except they all cleared the virus within a week, and I had a lingering cough for 2+ weeks. Remember that previous attempts at coronavirus vaccines, using more traditional approaches like the Covaxin; also all failed, and with evidence of subsequent increase in risk when exposed to viral variants, if memory serves. Not sure that India offers much hope of benefit.