A large number of sheep died on a farm  Experts found that there was a remnant of wild vegetables in the stomach of the dead sheep  After laboratory tests, the wild vegetables were infected with a pathogen that can release a certain substance that has devastating damage to the central nervous system of mammals  A small amount can cause immediate death
But the farmer said that his family also ate this wild vegetable, but it was no different
The pathogen is only harmful to mammals and does not damage the normal growth of wild vegetables