But there are significantly more amounts of livestock in contact with those fewer humans. Think of it this way: more total numbers = more opportunities for vir

But there are significantly more amounts of livestock in contact with those fewer humans. Think of it this way: more total numbers = more opportunities for viruses to grow or mutate = more chances for runaway or novel infections. Runaway infections are dealt with fairly well by government entities. Novel infections... might be harder to discover because they're, well, novel.