disease has primary infectious agent swine influenza https://www.malacards.org/card/swine_influenza SCTID:442696006 H1N1 flu EFO:0005226 Influenza A (H1N1) Virus infection DOID:0050211 UMLS:C0276357 NCIT:C80444 Swine influenza virus caused influenza H1N1 Influenza An acute viral respiratory infection caused by a strain of influenza virus which is endemic in swine (pigs). Rarely reported in humans prior to 2009, the disease is caused by a mutated strain of swine influenza A (H1N1) virus. It is highly contagious and spreads mainly through coughing and sneezing. Signs and symptoms include fever, chills, coughing, sore throat headache, muscle ache, and generalized weakness. Antiviral medications are most effective in the first two days of the illness. swine flu MEDGEN:1385137 Swine influenza virus influenza Influenza A (H1N1) H1N1 Virus infection MONDO:0005460 infectious disease influenza Swine influenza virus