Humans are the primary reservoirfor human infections. On June 11, 2009, the (WHO) signaled that a global pandemic of novel influenza A (H1N1) was underway by raising the worldwide pandemic alert level to 6.Transmission mode is airborne, incubation period varies from 1- 7 days. Clinical symptoms are high fever, body aches, headache, sore throat, dry cough, runny or stuffy nose, general fatigue,
diarrhea. Secondary bacterial infections, e.g pneumonia, may occur. Cover your cough and clean your hands after coughing or sneezing!Vaccine is available.