New research is drawing a possible link between H1N1 and obesity.  A new study may have found many of those hospitalized with severe H1N1 complications are overweight.

A new study of H1N1 flu hospitalizations and deaths in California found that of 268 adults more than half were obese. 67 were morbidly obese.

With that extra weight comes a higher risk for many conditions including diabetes, pulmonary or lung conditions and cardiovascular disease.  And the latest study found that two thirds of the obese patients had underlying conditions

"All of those can stack the deck against the patient should they become critically ill with H1N1," CBS News Medical Correspondent Dr. Jennifer Ashton said.

Researchers say obesity has never been considered a risk factor for severe seasonal influenza. Experts say this year's H1N1 flu is the first time they're seeing this possible trend.

In other H1N1 news, the virus has been confirmed in a cat treated at the Iowa State University College of Veterinary Medicine. It's the first known case of the virus to be diagnosed in a cat. It's also been confirmed in two ferrets, one in Oregon and the other in Nebraska. The cat is being treated and two of its owners had flu-like symptoms.