"ව්‍යාප්ත වසංගත" හි සංශෝධන අතර වෙනස්කම්

 

=== Influenza ===

[[ගොනුව:WHO pandemic phases.png|thumb|[[World Health Organization]] influenza pandemic alert phases]]

* The Greek physician [[Hippocrates]], the "Father of Medicine", first described influenza in 412 BC.<ref>[http://who.int/inf-pr-1999/en/pr99-11.html 50 Years of Influenza Surveillance]. ''World Health Organization''.</ref>