Josephine Schembre's was rushed to the hospital Sunday for the second time in two weeks.
"She spiked a 102 fever, [was] congested, and started vomiting," Schembre's daughter explained.
The flu is spreading easily, reports CBS News Correspondent Randall Pinkston, with elderly and children suffering the most. Doctors and nurses aren't immune either.
"A lot of [hospital personnel] are calling in sick," says Vicky Moskowitz, a nurse at New York's St. Luke's Roosevelt Hospital. "If they come in, they go home sick."
"The flu season is particularly severe," says St. Luke's Dr. Marc Borenstein. "People who are otherwise healthy, are getting struck by this illness."
"I've never gotten a flu shot, so it just didn't really occur to me," says 30-year-old Jonathan Rogin. "Maybe it'll occur to me next winter."
Doctors say the flu vaccine works, but if you haven't already gotten your shot, it's probably too late. It takes the body up to two weeks to build immunity, and by then, with any luck, this flu season will be over.