Definition of influenza pandemic in English English dictionary
(Tıp, İlaç) An influenza pandemic is an epidemic of the influenza virus that spreads on a worldwide scale and infects s large proportion of the human population. In contrast to the regular seasonal epidemics of influenza, these pandemics occur irregularly, with the 1918 Spanish flu the most serious pandemic in recent history. Pandemics can cause high levels of mortality, with the Spanish influenza being responsible for the deaths of over 50 million people