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[–] PewterKey ago 

L strain won't matter soon. C stain spreads faster and gives immunity or resistance to all three after infection. The highest risk of infection population have likely been infected enough to slow down any reinfection. There was a study in LA that found 5% of the population had anti-bodies. So at most if L strain came back, it would kill a few hundred and burn out.

Here is a article that discusses the three strains. It lists them as A, B, C. But A = L and B = S. If you search for the strains you can find other sources easily.

https://www.news.com.au/world/coronavirus/australia/coronavirus-australia-three-different-strains-of-virus-identified-by-cambridge-university-researchers/news-story/e6fbac027ba79eecb95e83aa1df80517

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[–] cabalstone 0 points 1 point (+1|-0) ago 

Found this article in my Medscape feed, which references this study published in Nature. Not particularly encouraging.

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[–] cabalstone ago 

Thanks. You've obviously been digging here. As I understand it, antibodies aren't specific to COVID19, so the test for antibodies is somewhat suspect. This gets very important when considering the insidious notion of immunity certs. Do antibodies work across the strains? Doesn't work with influenza, which is why the vaccine is so ineffective. So many questions and the answers are either unknown or deeply hidden.

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[–] PewterKey ago 

As it mutates more the effectiveness of antibodies or a vaccine will drop against all strains (like influenza where strains have many mutations between them). But right now COVID19 has 3 very closely related strains, so it might not be perfect immunity but your body won't be caught off guard if hit again by a different strain. Each new strain will push towards common cold levels of illness, becoming a less dangerous and shorter illness.