3 ms·
Article seems to say that the pig was infected by birds; it wasn't the same strain as cows.
by Buttons840 2y ago
Article seems to say that the pig was infected by birds; it wasn't the same strain as cows.
- spockz 2y agoExactly. So it was another avian strain that migrated to pigs and that for the first time. That seems to be why it is so serious.