Main symptoms of infectious pneumonia. Sources are found in main article: Wikipedia:Pneumonia#Signs_and_symptoms.
All used images are in public domain by Mikael Häggström.
When using this image in external works, it may be cited as:

Häggström, Mikael (2014). "Medical gallery of Mikael Häggström 2014". WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.008. ISSN 2002-4436. Public Domain.or

By Mikael Häggström, used with permission.
Translated into Telugu by User:Mekala Harika