Previously, the median incubation period for neoconjunctivitis was 3 days, while the latest median incubation period was 4 days with an interquartile spacing of 5 (2-7) days, so there was some variation.
Previously, there were cases of patients with incubation periods of up to 24 days and even 28 days, but most patients had an incubation period of about 4 days from exposure to the source of infection, with only 13 patients having an incubation period greater than 14 days and 8 patients having an incubation period greater than 18 days. Therefore, it is not accurate to assess the incubation period based on the shortest and longest duration of infection. The median and interquartile spacing, which are used in medical statistics to indicate the concentration and dispersion of relevant data, should be chosen as more accurate.