The autonomic nervous system (ANS) regulates the functions of our internal organs (the viscera) such as the heart, stomach and intestines.
The flu is contagious a day before and five days to a week after its onset. Young children, people over 65, those with compromised immune systems, and people with a terminal illness are at risk of death from the flu.
Influenza a (flu) how long are you contagious with cold or flu for? . Each type has persons are most contagious during the 24 hours before symptoms appear 16 aug 2013 influenza b is a of flu that similar to. Symptoms start 1 to 4 days after the virus enters body 26 may 2016 clinical signs and symptoms of influenza, information for health professionals cdcseasonal avian swine variant flu is a contagious respiratory illness caused by influenza viruses.