Right, that's exactly what I (GP) took it to mean. Maybe there is medical "resistance" term to mean 100% immunity from something, but I meant it in a pedestrian

Right, that's exactly what I (GP) took it to mean. Maybe there is medical "resistance" term to mean 100% immunity from something, but I meant it in a pedestrian sense that pigs are considered _more_ resistant than say cows, when I thought they'd be about the same risk for both.