The incubation period of flu or influenza is usually 1-2 days.
The group is characterized by various influenza viruses. There are many different types of flu.
Each year, bringing new flu virus appears. The vaccine will be adjusted each year.
The incubation period of the new swine influenza is 1-4 days. Against the pig flu, there is still no vaccine.
The flu is contagious during the incubation period. Symptoms of different influenza types are high fever, body aches, cough, chills, sore throat, headache and a strong feeling of illness.

Influenza incubation period: 1-2 days.
Pig flu incubation period: 1-4 days.