R
noun[SorU]
mainlyUK/ɑːr//ɑːr/(alsoR0)symbolforreproductionnumber: theaveragenumberofpeoplethat onepersonwith aparticulardiseaseinfects
（感染率）R值
An R of less than 1meansthat theviruswilleventuallydieout.感染率R值小于1表明病毒最终将会消失。
R wasestimatedto be 1.46 for H1N1 in 2009.在2019年，H1N1的感染率R值为1.46。
ThekeyRrateofmeasuringCOVID-19spreadroseowingtocarehomeinfections.因为养老院内的感染，代表COVID-19传播速度的R值上升了。
- Theaimof the newtechnologyis tokeepthe "R" down.
- If R is less than 1, eachexistinginfectioncausesless than one newinfection.
- R is notfixed- itchangesasimmunitydevelops.