The presence of harmful substances or pathogens on surfaces used r people which can lead to infection
A microorganism that causes disease, such as a virus bacteria, fungus, or parasite
Pathogen
Carrier
An organism that lives in or on another organism (the host) and may cause disease (e.g., tapeworms, malaria).
Parasite
sterilization
A tiny infectious agent that can only replicate inside the cells of a living organism and can cause diseases like the flu or COVID-19.
Virus
The time between exposure to a pathogen and the appearan the first symptoms.
Incubation Period
The body's response to injury or infection, characterized by redness, swelling, heat, and pain.
Inflammation
The absence of bacteria, viruses, and other microorganisms. the term is often used in medical settings to refer to sterile conditions
A type of organism that can cause infections, especially in individuals with weakened immune systems (e.g., athlete's foot, yeast infections).
Fungus (plural: Fungi)
An organism (e.g., mosquito, tick) that transmits a pathogen from one host another.
Vector
A life-threatening condition that arises when the body's response to infection causes injury to its tissues and organs.
Sepsis
An infection that is acquired in a hospital or heath care facility often as a result of inadequate hygiene practices
nosocomial infection
The body's defense system that fights off pathogens and infections including white blood cells, antibodies, and other mechanisms.
Immune System
that can carry and transfer pathogens to humans.
Fomite: A non-living object (e.g., doorknob, clothing)
An organism (e.g., mosquito, tick) that transmits a pathogen from one host another.
Vector
A substance that prevents the growth of disease-causing microorganisms on living tissue
Antiseptic
A type of single-celled microorganism that can cause disease. Some bacteria are harmful, while others are beneficial to human health.
Bacterium (plural: Bacteria):
A disease that is transmitted from animals to humans (e.g., rabies, avia
Zoonosis
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