Changes in agent variability and time course of disease incidence during a year (as exemplified by dysentery).
The vulnerability of epidemic process during the period of minimum annual incidence of the disease is validated. Biological properties of Shigella sonnei are studied and their variability examined using the index for evaluation of the mean number of variations for a sign. Minimum agent heterogeneity coincides with minimum incidence of disease and maximum heterogeneity with its seasonal rises.
Savilov
E D
ED
Laboratory of Epidemiology and Immunology, Institute of Epidemiology and Microbiology, Center of Medical Ecology, East Siberian Research Center, Siberian Division of Russian Academy of Medical Sciences, Irkutsk, Russia.
Markova
Y A
YA
D004405:Dysentery, Bacillary / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D012426:Russia / Q000453:epidemiology; D012621:Seasons; D012764:Shigella sonnei; D013997:Time Factors