Infection with NeoCrown can usually be detected when the infection is self-cured. The new crown is generally referred to as the new coronavirus, after infection, with the onset of the disease, the body will produce antibodies to resist the new crown virus, so the infection of the new crown since the recovery of the body there will be antibodies, usually serum antibody test can be a positive test results, so it is possible to find out that the infection has been. If the nucleic acid test or the new crown antigen test, usually take a throat swab and nasal swab, after the infection of the new crown self-cure, the nasal cavity and the pharynx will not have the virus residue, so if the infection of the new crown self-cure through these two methods of examination, generally will not be detected infected. New crown virus transmission ability is relatively strong, so in normal times it is recommended to avoid going to high-risk areas and crowded places, if it is at risk areas, it is recommended to do a good job of protection, try to avoid going out, such as wearing masks, the use of protective clothing and so on.