Final Video:  A stray cat coughs and vomits - FIV in a stray cat
Channel: Dr David Sing
Date: 24/01/2019

Coughing in cats is usually caused by herpesvirus-1, calicivirus and/or chlamydia psittaci.
 
In this coughing stray cat, FIV infection was suspected as he is a fighter, defending his void deck turf, despite being neutered, according to the family of four Singaporeans who feed him at the void deck. 

A test indicated he was FIV antibody positive. Low total white cell count known as leucopenia pointed to a viral infection and in this case, it was the Feline Immunodeficiency Virus.  Low platelet count is due to the viral infections in this case. 

He would not be confined at home to be safe from balcterial and viral infections from other stray cats during fights and meetings.   Freedom to roam has been his life-style and so the family had to let him out as he had recovered from coughing and was eating.

More details at:
https://2010vets.blogspot.com/2019/01/3391-fiv-in-strayed-cat-what-to-do.html