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In the U.S., three CNN employees have been fired for violating the network's coronavirus policy by going to the office unvaccinated. CNN President Jeff Zucker said in an internal memo emailed to staff on Thursday that the three employees had been "terminated". Zucker made it clear that the network has a zero-tolerance policy on this. CNN had been relying on an honor system that required workers to be vaccinated but did not demand they show proof. But Zucker said that may change going forward.