What term describes a person infected with a pathogenic microorganism but with no symptoms?

What term describes a person infected with a pathogenic microorganism but with no symptoms?

• A. Asymptomatic carrier
• B. Contagious disease
• C. Bacilli
• D. Bloodborne pathogens

Answer: (A)

Being asymptomatic means carrying a pathogenic microorganism without showing any symptoms. This person is infected but feels fine, yet can still shed and spread the organism to others, depending on the microbe and circumstances. That’s why asymptomatic carriers are a key concern in infection control: transmission can occur even when there’s no illness evident, so practices like strict hand hygiene, using appropriate PPE, and appropriate screening and vaccination help prevent unnoticed spread. The other terms don’t describe this situation. Contagious disease refers to diseases that spread from person to person, usually involving symptoms that signal illness, rather than a lack of symptoms. Bacilli describes a shape of bacteria, not a person’s infection or symptom status. Bloodborne pathogens denote the types of pathogens transmitted via blood, focusing on transmission route and pathogen type rather than whether a person has symptoms.

Being asymptomatic means carrying a pathogenic microorganism without showing any symptoms. This person is infected but feels fine, yet can still shed and spread the organism to others, depending on the microbe and circumstances. That’s why asymptomatic carriers are a key concern in infection control: transmission can occur even when there’s no illness evident, so practices like strict hand hygiene, using appropriate PPE, and appropriate screening and vaccination help prevent unnoticed spread.

The other terms don’t describe this situation. Contagious disease refers to diseases that spread from person to person, usually involving symptoms that signal illness, rather than a lack of symptoms. Bacilli describes a shape of bacteria, not a person’s infection or symptom status. Bloodborne pathogens denote the types of pathogens transmitted via blood, focusing on transmission route and pathogen type rather than whether a person has symptoms.