Covid-19 reinfections are real. Should you be worried?

We all suffer multiple bouts of the common cold throughout our lives and never think twice about it. We live with recurring influenza seasons despite a vaccine. But what about Covid-19?

Repeat occurrences of cold and flu happen because our immune systems seem to "forget" the previous infection.

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A version of this article appeared in the print edition of The Straits Times on October 24, 2020, with the headline 'Covid-19 reinfections are real. Should you be worried?'. Print Edition | Subscribe