reproduction number
noun [ C ] uk/ˌriː.prəˈdʌk.ʃən ˌnʌm.bər/ us/ˌriː.prəˈdʌk.ʃən ˌnʌm.bɚ/ (also reproduction rate); (abbreviation R, R0)
（疾病的）传染数
the average number of people that one person with a particular disease infects
The reproduction number is useful for understanding the transmissibility of a disease. 了解传染数有助于理解疾病的传播能力。
What is the reproduction rate for Covid-19? Covid-19的传播率是多少？
- More examples
- Measles has a reproduction number of 15 in populations without immunity.
- Reproduction numbers may be estimated at different times during an epidemic.
- The Department of Health has been tracking the reproduction rate of the virus throughout the pandemic.