Some of these small parasites have been mutating and are now resistant to many over-the-counter medications.
Wal-Mart is preparing for a possible employee walkout on Black Friday, the day after Thanksgiving – one of the busiest shopping days of the year.
Organizers say they’re expecting about 1,000 of the 4,000 or so U.S. chain stores to be affected by the walkouts.
The Christian Science Monitor reports that Wal-Mart officials are not worried, calling the walkout a “made for TV event.”
Wal-Mart has filed a request with the National Labor Relations Board (NLRB) to intervene, saying the union supporting one of the Wal-Mart workers’ organizations is illegally interfering with Wal-Mart’s affairs.
Wal-Mart workers are not unionized and cannot collectively bargain.
The NLRB has said it will not make a decision until after the Thanksgiving holiday, effectively allowing the walkouts to take place.