Fig. 3
Time between the first and second outbreaks at varying degrees of pig-to-human interaction The transmission of the super-strain in humans was set at five specific values. Time frames vary for β h,2 =0.015 from 41 to 81 years (blue), β h,2 =0.0215 from 56 to 82 years (red), β h,2 =0.024 from 61 to 70 years (green), for β h,2 =0.04 from 58 to 59 years (black), for β h,2 =0.084 from 52 to 54 years (magenta). Overall times range from 41 to 82 years.