The Johns Hopkins University COVID-19 tracker estimates that over 16 million people worldwide have been infected with the coronavirus that causes COVID-19. It also estimates that nearly 650,000 people have died from the disease, but millions have recovered. So, a question many people around the world are asking is, can you get it again? In fact, that was among the most-searched questions on Google’s website for many weeks in May and June. Whether or not you can catch COVID-19 again after getting infected once is connected to your body’s immune system. Does infection strengthen the body’s natural defenses as it does with other pathogens? And if there is an immunity, how long does it last? Right now, there are no clear answers to these questions.