In the United States suffer from HCM around half a million people. The symptoms are very different, in some cases they may be mild enough to go unnoticed as they may be in other hard enough, can lead to heart failure.

The study participants were mostly white and male , average age 52nd HCM patients, however, tend to be younger,. 43, and more than half were women. Almost a third of the participants reported smoking, although this rate is significantly lower in those with HCM . All had received a heart transplant between January 1990 and December 2004.More then one third of adults having H1N1 in that group had gastrointestinal symptoms such as nausea, vomiting or diarrhea, from only about 5 % the seasonal flu, centers the.

SOURCES: Janice K. Public Health the medical officer, California Department of Public Healthcare, Edward Walsh, professor, medical, University of Rochester Medical Center, and Chief, Infectious Diseases, Rochester General Hospital, New York, Scott Lillibridge, Dean, Texas A & M Health Sciences Center School of Rural Public Health, Houston, Jeffrey Boscamp, physician-in-chief, Sanzari pediatric hospital, Hackensack University Medical Center intensive care, 3rd November 2009, teleconference with: Thomas Frieden, Director, U.S. Centers for Disease Disease Control and Prevention, Atlanta, November 2009, Journal of the the American Medical Association.