Carrier
In some cases these individuals can be called "Carriers." It is rare, but possible, for an individual to carry a pathogen but exhibit no symptoms. These individuals are in almost all cases still highly contageous.
HIV-related or AIDS-Related illness. You may also be referring to a term called "Opportunistic Infection."
They are called pathogens.
The disease causing microbes are called pathogens.
it is called Vaccine whcih when administrated in any individual provide immunity against that pathogen..
pathogens
Prions are the smallest pathogens
Asepsis means the absence of pathogens
pathogens
Viruses, bacteria, and so on are called germs, infective agents, microbes, pathogens and so forth.
They are called as pathogens.
Most bacteria do absolutely nothing, Some are harmfull (there called pathogens) and others help you out with numerous things from digestion to fighting off viruses.