Do dyspnea and pain frequently co-occur among Medicare managed care recipients?
Pain and dyspnea commonly occurred, developed, and resolved together. Most older adults with dyspnea also reported pain. Medical conditions typically assumed to cause dyspnea did not account for this association. The most plausible explanation for the co-occurrence is physical deconditioning.
These findings indicate that, during acute hepatitis C virus infection in vivo, virus-specific neutralizing antibodies drive sequence evolution and, in some individuals, play a role in determining the outcome of infection.