INFLUENZA TIPE A：Influenza Disease Severity, Clinical Presentation Differs by

influenza tipe a   influenza a Patients with influenza AH3N2 or B were less likely to require hospitalization and supplemental oxygen relative with those with influenza AH1N1pdm09. In regard to risk factors, the risk for intensive care unit admission was not associated with patient age, sex, or influenza type. Moreover, length of hospital stay was not significantly

virus influenza a Over the past century three major influenza A virus pandemics have taken place: the Spanish flu H1N1 in 1918, the Asian flu H2N2 in 1957, and the Hong Kong flu H3N2 in 1968 . The natural reservoir for influenza A viruses is birds, and at least 16 different antigenic subtypes of the hemagglutinin glycoprotein and 9 subtypes of the

influenza a adalah Flu adalah penyakit infeksi saluran pernapasan akut yang disebabkan oleh virus influenza. Virus ini menyerang sistem pernapasan manusia, meliputi hidung, tenggorokan, dan paru-paru. Terdapat tiga jenis utama virus influenza yang dapat menginfeksi manusia, yaitu influenza A, B, dan C. Virus influenza sangat mudah menular dari satu orang ke orang