Well so much for herd immunity or natural immunity. There is growing evidence that immunity to the new Coronavirus after infection may be short-lived. Furthermore the rate of re-infection is slowly rising, as some people who were once infected by the virus, became infected again. Concrete answers are vital in developing an actual vaccine, that is, if we ever get one. For a look at other aspects affecting the Coronavirus catch host Collette Prince on Covid-19 Business Watch.
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