Instead of NPIP certified, can we go up a level to PPIP certified? (paranoid people inspecting poultry?)
I get asked all the time now if my chickens have salmonella. Isn't there hundreds of strains of this bacteria? If there are tests for the ones that make people sick (which would have to update constantly due to variants mutating naturally), how often would one test? How often vaccinated? I eat undercooked eggs all the time - softboiled, puddings... I'm not trying to be insulting, just really don't know this, if it is even practical.
I'm voting the heat for the same reasons you state, chickipoo. Today and yesterday were alot cooler and their poops are, hmmm, firmer and larger.