Unfortunately, everything is speculative at the moment. There is no evidence available that people who recover from this virus will develop long-term immunity. Meanwhile, there's plenty of info via Google about how difficult it is to develop vaccines for coronavirus strains. They are still trying to dvelop them for MERS and SARS and they were a long time ago. Sure, the global effort for a COVID-19 vaccine is probably taking the science to another level but these are very early days guys. Sadly, I think that even 2021 season is unlikely.
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