Thanks for the info on R0! From wiki "What these thresholds will do is determine whether a disease will die out (if R0 < 1) or whether it may become epidemic (

Thanks for the info on R0! From wiki "What these thresholds will do is determine whether a disease will die out (if R0 < 1) or whether it may become epidemic (if R0 > 1), but they generally can not compare different diseases." If seasonal flu (type-B?) has an R0 of ~1.3 can we reasonably call seasonal flu an epidemic? H1N1 (spanish and swine flu) is ~1.8 and had major outbreaks in 1918 and 2009. Is it realistic to expect we can sufficiently influence covid-19 using NPIs to achieve R0 < 1?