Infectious / infectious agent
Is a biological agent such as viruses, bacteria, prion, parasites, or fungus that causes disease to its host (pathogen)
Glossary Source
JRC EU CBRNe Glossary
(
EU Glossary on Chemical, Biological, Radiological, Nuclear, and Explosive risks
)
https://publications.jrc.ec.europa.eu/repository/bitstream/JRC128863/JRC128863_01.pdf