Dr. Suresh Rajan (played by Kunchacko Boban) is a protagonist in Virus.
A medical professional tasked with conducting laboratory tests to identify the unknown pathogen and confirm the Nipah virus. Zakariya (played by Zakariya Mohammed) appears in Virus.
Sister Akhila (played by Rima Kallingal) appears in Virus.
A frontline nurse who treats the index patient, becomes infected, and tragically succumbs to the virus, leaving a poignant letter for her husband.