If the article is correct, there are a variety of great to not so great scenarios: Another possibility is that immunity to SARS-CoV-2 is permanent. In that cas

If the article is correct, there are a variety of great to not so great scenarios: Another possibility is that immunity to SARS-CoV-2 is permanent. In that case, even without a vaccine, it is possible that after a world-sweeping outbreak, the virus could burn itself out and disappear by 2021. However, if immunity is moderate, lasting about two years, then it might seem as if the virus has disappeared, but it could surge back as late as 2024, the Harvard team found.