Technically, the term "swine flu" refers to influenza in pigs. Less often, someone infected with swine flu passes the infection to others. During the flu season, H1N1 caused the respiratory infection in humans that was commonly referred to as swine flu.
WebMD explains the H1N1 flu virus (swine flu), what causes it, and its nervous system, neuromuscular, or metabolic problems; Adults and.
Most U.S. cases of H1N1 swine flu have been in children and young adults. It's not clear whether this will change as the H1N1 pandemic.
H1N1 symptoms can present differently in adults and children. We'll go over symptoms to watch for in both groups, as well as how to recognize.
When it first emerged, swine flu was most common in children 5 years and older and young adults. This was unusual because most flu virus.