What must occur for a pathogen to cause an infection?

Question

06-10-2023
Biology

College

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What must occur for a pathogen to cause an infection?

Answer :

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winterGlitter1 winterGlitter1 · Answer 1 · 2024-01-14T08:25:38-05:00

Final answer:

To cause an infection, a pathogen must enter the host, colonize, evade the immune system, damage host cells, and find a new host.

Explanation:

The process of infection by a pathogen

For a pathogen to cause an infection, several steps must occur:

Entry: The pathogen must enter the host's body, either through inhalation, ingestion, or direct contact with broken skin or mucous membranes.
Colonization: Once inside the host, the pathogen must establish itself and multiply in the host's tissues.
Evade the immune system: Pathogens have evolved various strategies to evade or suppress the host's immune response, allowing them to survive and thrive.
Damage host cells: Pathogens cause damage to host cells through various mechanisms, including releasing toxins, disrupting normal cellular functions, or triggering excessive inflammation.
Exit and transmission: Finally, the pathogen must exit the host and find a new host to continue its life cycle, often through methods such as coughing, sneezing, or direct contact with bodily fluids.

By successfully completing these steps, a pathogen can cause an infection in a host.

Learn more about pathogen infection here:

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