Q- Can I catch COVID-19 the second time?

It's very unlikely, experts say. If you get infected, it’s almost certain that you will have some immunity to coronavirus to protect you against future infections. However, it’s likely that the immunity will be a natural transient immunity, and it will wax and wane with time. Antibody testing is available to determine if you had COVID-19, even if you never experienced symptoms.

For your safety, you need to continue following public health strategies like social distancing, respiratory precautions, wear masks in public, and hand washing to help reduce the transmission of the virus and the number of infections.

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References- https://www.nytimes.com/2020/07/22/health/covid-antibodies-herd-immunity.html  https://www.webmd.com/lung/qa/can-you-be-reinfected-if-you-have-already-had-the-coronavirus