Àjọ Ìlera Àgbáyé ti agekuru re nje WHO jẹ́ àjọ Àgbájọ àwọn Orílẹ̀-èdè Aṣòkan tí wọ́n dá sílẹ̀ fún ètò ìlera gbogbo àgbáyé. Erongba dida WHO sile ni "ki gbogbo eniyan le de ipele ilera to ga ju to see see". Olú ilé iṣẹ́ rẹ̀ wà ní Geneva, Swítsàlandì, o si ni ile-ise agbegbe mefa ati ibi ise àádọ́jọ kaakiri agbaye. Wọ́n dáa WHO sílẹ̀ ní Ọjọ́ keje Oṣù kẹrin Ọdún 1948. Ipade akoko ti apejo ilera agbaye, ajo ti o n sakoso WHO, waye ni ojo kerinlelogun osu keje odun naa. Àjọ Ìlera Àgbáyé gba awon dukia, osise, ati ojuse Ajo Ilera ti Ajumose Orilede, ile-ise agbaye d'Hygiène Publique, ati isori ailera gbogboogbo mora. Ise re bere ni odun 1951 leyin asopo ti oro inawo ati ise ona to lapere. "The U.S. Government and the World Health Organization". The Henry J. Kaiser Family Foundation. 24 January 2019. Archived from the original on 18 March 2020. Retrieved 18 March 2020. "WHO Constitution, BASIC DOCUMENTS, Forty-ninth edition" (PDF).