What is a portal of exit? Provide an example.

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Multiple Choice

What is a portal of exit? Provide an example.

Portals of exit are the routes pathogens use to leave their reservoir and reach a new, susceptible person. An example is the respiratory tract during coughing or sneezing, where droplets containing the pathogen exit the body. Another exit route is blood leaving a wound. The path by which a pathogen enters a new host—such as through mucous membranes or broken skin—is a portal of entry, not an exit. The other options describe the reservoir, entry, or disinfection, which are separate concepts.

Portals of exit are the routes pathogens use to leave their reservoir and reach a new, susceptible person. An example is the respiratory tract during coughing or sneezing, where droplets containing the pathogen exit the body. Another exit route is blood leaving a wound. The path by which a pathogen enters a new host—such as through mucous membranes or broken skin—is a portal of entry, not an exit. The other options describe the reservoir, entry, or disinfection, which are separate concepts.

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