Imagine you're one of the key communications people at a company that's about to make one of its biggest news announcements ever. Then, throw in a bout with strep throat less than a week before the press conference.

Losing one's voice is the ultimate nightmare for a communications pro, but it was a stark reality for Laurie Schalow, senior director of PR at KFC, which late last month was about to announce it was switching from cooking oil containing unhealthy trans ...