The paper in question: <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7444648/pdf/main.pdf" rel="nofollow">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7444648/pdf/mai...</a><p>It is indeed very interesting and worthy of consideration that Indians and other people from poor countries with lesser hygiene may be more immune to COVID infections.<p>India's government lifted its infamous lockdowns at times when the number of active cases only seemed to be flying upwards and had no anticipations of coming down anytime soon. In a poor, extremely overpopulated country with high rates of overcrowding and very low hygiene standards, coupled with rampant unemployment and economic distress, anyone could have only expected the situation to worsen. And it did - the country's GDP shrunk by almost a quarter and cases continued to pile up... until they didn't. The number of active cases miraculously peaked mid-November and have been in a healthy downward trend since. While developed countries like the UK seem to have their number of active cases shoot up exponentially, many states in India are experiencing a net decrease in cases to very safe levels. Even infamously overcrowded states like Uttar Pradesh are displaying impressive levels of recovery.<p>One has to reckon there must be something more to it than just government interventions and change in attitudes.