"This is a woman who works 20 hours a day and comes into contact with tens of thousands of people and you pick up germs and viruses and things like that and you get exhausted," Malloy, a steadfast supporter of the Democratic nominee for president, told the Associated Press. "If you don't get a cold or a virus or the flu or pneumonia in a campaign, you weren't working hard enough."
Malloy -- who is widely viewed as a workaholic -- knows a thing or two about frenzied campaigns. He won two hardfought elections against Republican Tom Foley in 2010 and 2014.
Questions about Clinton's health and wellbeing moved from the fringes to a mainstream campaign concern when she left a 9/11 memorial service in Manhattan early after feeling unwell. An aide said she had overheated. Hours later her campaign revealed she had been diagnosed with pneumonia two days earlier, and that should be taking a break from the trail.
Malloy's comments came in a story recalling a 1998 instance where Clinton developed a blood clot while campaigning for Democrats in Congress and wouldn't follow a doctor's recommendation of hospitalization and bedrest. She told only a few close confidants and her Secret Service detail about the condition. A nurse traveled with Clinton to monitor her health.
Clinton is expected to resume campaigning with an event in North Carolina on Thursday.