It is possible to get the virus again if you have had it once, depending on whether or not you take precautions, how the virus mutates, and your own immunity. It is possible to get the virus a second time, but people who take good precautions are less likely to get it again, while those who don’t or don’t take adequate precautions are more likely to get it again. In addition, since the new coronavirus can mutate, although the body can develop a certain degree of immunity after the first infection, this immunity may not be sufficient to prevent infection by the mutated strain of the new coronavirus, and may therefore lead to re-infection. After the first infection, the immunity produced by the body to protect the body also has a time limit, the longer the time, the protection is gradually reduced, so there is a possibility of secondary infection.