- Fever of 99.9 degrees or greater or chills and
- Cough, sore throat, runny nose, body aches, headache, fatigue, nausea, vomiting or diarrhea.
- Incubation and Infectious Period
- The incubation period for H1N1infection is one to seven days.
- The infectious period for H1N1 is defined as one day prior to the onset of illness to 24 hours after the fever ends without the use of fever-reducing medications.
- The illness has been presenting as mild flu symptoms with a fever lasting two to three days.
- The H1N1 virus lives on surfaces for two to eight hours.
- Current data indicate the risk of infection among persons age 65 or older is less than the risk for younger age groups (as compared to seasonal influenza).