H1N1 (swine flu) 2009 flu outbreak in humans is due to a new strain of influenza A virus subtype H1N1 that derives in part from human influenza, avian influenza, and two separate strains of swine influenza. The origins of this new strain are unknown. It passes with apparent ease from human to human, an ability attributed to an as-yet unidentified mutation. The strain in most cases causes only mild symptoms and the infected person makes a full recovery without requiring medical attention and without the use of antiviral medicines. main causes of swine flu
espiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. most outbreaks occur during the late fall and winter months similar to outbreaks in humans.
H1N1 symptoms of swine flu
1 Fever 2 Muscle Aches 3 Coughing 4 Headache 5 Sore throt 6 Runny nose 7 Naousia 8 Vomiting 9 Lake of Apetite 10 Diareaha 11 Weakness