@IanRicksecker @JeromeAdamsMD @Capt3958 It has to be some combination of R and case levels. At very low case levels (if you don't fully eradicate), you can have transitory high R but measures that are sufficient contain cases and bring R back down. Not the same measures needed as high R + high cases.
@IanRicksecker@JeromeAdamsMD@Capt3958必须是R和病例水平的某种组合。在非常低的病例水平（如果你没有完全根除），你可以有短暂的高R，但足够的措施可以控制病例，并使R下降。与高R+高病例所需的措施不同。