>I tend to think it was circulating in rural Hubei, probably coinfecting domestic animals and people, getting better and better at infecting people until the ma

>I tend to think it was circulating in rural Hubei, probably coinfecting domestic animals and people, getting better and better at infecting people until the market event happened which was where it found a densely packed human population where it spread with R0 significantly greater than 1 and took off. How would a virus that's medium good at infecting humans, but not yet amazing at infecting humans, stay in rural Hubei for years without escaping?