Raw LLM Responses

I'll preface this by saying that I am not a proponent of the no intervention/herd immunity approach. I think vaccines are what'll help us get out of this situation and flattening the curve in the mean time is the way to go. That being said, I'm not sure the article or the study cited make a good point as to why herd immunity cannot be achieved. In Wuhan, the virus was contained and essentially eliminated by very strong lockdown measures, to the point that COVID-19 clinical trials had to be prematurely stopped due to a lack of patients to enroll way back in April. Though Wuhan was hard hit, I don't think a significant proportion of the population was infected in the first place. It's not too surprising that their antibody tests are coming back positive in such a small proportion. Another thing to consider is that the antibody tests used generally have very poor sensitivity and specificity. This may contribute to the low proportion of seropositivity they report. As to the claim that antibodies wane over time, that also seems to be an artifact of antibody tests with poor test characteristics. Several recent studies using more sensitive and specific methods (including this one https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7554472/) show that neutralizing antibodies persist in nearly all cases of COVID infections, including asymptomatic ones, up to a follow up of 226 days (COVID hasn't been around for a longer follow-up to be possible). The reports of reinfections with COVID that have survived peer review can pretty much be counted on one hand. It seems that an infection with COVID does confer lasting immunity, and that makes it all the more likely vaccines will work.