Influenza: primary and initial spread triggered by the abiotic vehicle cold drinking water - the triggering of human influenza epidemics by warm biotic droplet infection improbable

摘要

The primary and the initial trigger of human influenza epidemics by biotic droplet infection is not proven and is extremely improbable, because influenza epidemics rarely arise together in recognizable clusters and are caused by locally isolated influenza subtypes and strains. These strains appear in a locally isolated pattern geographically, and have not been proven to arise primarily in large cities and densely populated areas, but have been found predominantly in the colder regions of Germany, reaching their peak regularly in certain districts/cities. Moreover, these strains strictly develop in parallel to the course of winter cooling and can hardly spread via saliva droplets; saliva contains far less number of influenza viruses than the heavier droplets from the throat and nose.