First, it was just one plant shutting down. But now, it’s at least seven major U.S. meat facilities that have seen halts in the space of a few weeks. And all those voices previously assuring Americans that supplies would be fine now sound like a chorus of concern over shortages. There’s been an avalanche of news in just 24 hours. Tyson Foods Inc. shut two of its key pork plants. Case counts continued to mount, including in Canada, where industry groups are saying they’ll probably hold back some of what’s usually exported to the U.S. Meanwhile, the head of JBS SA, the world’s top meat producer, warned of shortfalls.  Read more