55 'This Ends The Debate' - Israeli Study Shows Natural Immunity 13x More Effective Than Vaccines At Stopping Delta (www.zerohedge.com) posted 3 years ago by border_humper 3 years ago by border_humper +55 / -0 43 comments share 43 comments share save hide report block hide replies
OK. A few minutes on the Internet produced this study, in which people previously infected with respiratory syncytial virus were exposed to the same virus again after varying periods ranging from 2 to 26 months after their recovery.
The results were: "Within 26 months 73% had two or more and 47% had three or more infections." https://pubmed.ncbi.nlm.nih.gov/2010624/
So your statement that "your immune system always gives you 100% immunity against an illness you've previously gotten" is not universally correct.
Does that help?