title: The first influenza pseudopandemic of the 21st century?
authors: José Manuel
authors: JM
authors: Echevarría
mesh_terms: D006801:Humans; D015994:Incidence; D009980:Influenza A virus / Q000145:classification / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology*; D058873:Pandemics; D012621:Seasons; D013997:Time Factors; D014944:World Health Organization