There is no clear probability of contracting a new crown. The probability of getting a new crown varies for different populations. The probability of infection is influenced by a number of factors, including the level of exposure and epidemiologic history of exposure, the immunity of the population, and the strain and virulence of the virus. The probability of contracting neocollins is greatly increased in populations that have a “temporal and spatial interface” with neocollins compared to populations that do not have such an interface. In addition, the virulence and transmissibility of different strains of Neocollins vary, as do the immunity and fitness levels of different groups. The greater the virulence and the lower the level of immunity, the greater the probability of infection. Therefore, for the general population, protection principles and regulations should be followed to avoid temporal and spatial interactions with patients with New Crown, wear good masks for good protection, and also to enhance their immunity. For people with a history of suspected epidemiologic contact, they should take the initiative to report, pay close attention, and immediately seek medical attention for clear diagnosis of relevant symptoms.