5 n-count A medium is a substance or material which is used for a particular purpose or in order to produce a particular effect. Blood is the medium in which oxygen is carried to all parts of the body..., Hyatt has found a way of creating these qualities using the more permanent medium of oil paint.
An influenza pandemic is a global outbreak of disease that occurs when a new influenza A virus appears or âemergesâ in the human population, causes serious illness in people, and then spreads easily from person to person worldwide. Pandemics are different from seasonal outbreaks or âepidemicsâ of influenza.
They reach the peak of their activity, the maxima, every 11 years, coinciding, the scientists say, with all major flu outbreaks since 1761, including the 1918 Spanish flu pandemic blamed for 20m deaths worldwide. The latest cycle began to peak in September and the maxima is due sometime this year. Space.