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| English | Russian |
| basic reproduction number | базовый индекс репродукции, базовый коэффициент репродукции (In epidemiology, the basic reproduction number (sometimes called basic reproductive ratio, or incorrectly basic reproductive rate, and denoted R0, pronounced R nought or R zero) of an infection can be thought of as the expected number of cases directly generated by one case in a population where all individuals are susceptible to infection.  wikipedia.org Vicomte) |
| Effective reproductive number | эффективный коэффициент репродукции (The effective reproductive number (R) is the average number of secondary cases per infectious case in a population made up of both susceptible and non-susceptible hosts. org.uk Vicomte) |