The Center for Disease Control has also encouraged people over 60 and those with severe chronic medical conditions to “stay at home as much as possible.”

“Wheel of Fortune” host Pat Sajak, 73, underwent emergency surgery for an intestinal blockage in November.

“Jeopardy” host Alex Trebek, 79, is battling pancreatic cancer.

According to the American Cancer Society,” cancer patients are among those at high risk of serious illness from an infection because their immune systems are often weakened by cancer and its treatments.”