Editorials are not only just a covering article, but an insight from editor's perspective. So it covers the views of all authors on a particular topic and throws Lime Light on the Theme of Issue.
An Epidemic (derived from Greek words epi "upon or above" and demos "people") is the rapid spread of disease to a large number of people in a given population within a short period of time. Epidemic diseases are the scourge of human civilization. Time and again survival of human societies has been threatened by epidemics.