Àrùn òtútù tabi òtútù (flu) jẹ́ àrùn àkóràn láàrín awon òlóngo (ẹyẹ, àdìrẹ) àti àwọn àfòmúbọmó tí èràn RNA ẹbí Orthomyxoviridae ń fà. Láàrín àwọn ènìyàn ìbá ń fa òtútù (ìgbónạ́-ara), ẹ̀dùn lọ́rùn, ẹ̀dùn iṣan, ìforí kíkankíkan, ikọ̀, àìlágbára àti ìrora. Duben-Engelkirk, Paul G. Engelkirk, Janet (2011). Burton's microbiology for the health sciences (9th ed.). Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. p. 314. ISBN 9781605476735. https://books.google.com/books?id=RaVKCQI75voC&pg=PA355.  "Influenza: Viral Infections: Merck Manual Home Edition". www.merck.com. Retrieved 2008-03-15.  "Key Facts about Influenza (Flu) & Flu Vaccine". cdc.gov. September 9, 2014. Retrieved 26 November 2014.  Èràn Info on influenza Fact Sheet Health encyclopedia entry BioHealthBase Bioinformatics Resource Center Database of influenza sequences and related information. Overview of influenza] Congressional Research Service (CRS) Reports regarding Influenza Influenza Surveillance and Contingency Plans (by Country/Region) Orthomyxoviridae Influenza Virus Resource InfluenzaWorld Resource for all influenza-related information. European Influenza Surveillance Scheme