Susan is a 46 year-old female. She has recently been diagnosed with influenza (a contagious viral infection). Her clinician pleads with her to wash her hands frequently to avoid spreading this infection to others. Which link, in the chain of infection, would Susan break by washing her hands?Group of answer choicesPortal of exitPortal of entryTransmissionSusceptible new host
Question
Susan is a 46 year-old female. She has recently been diagnosed with influenza (a contagious viral infection). Her clinician pleads with her to wash her hands frequently to avoid spreading this infection to others. Which link, in the chain of infection, would Susan break by washing her hands?Group of answer choicesPortal of exitPortal of entryTransmissionSusceptible new host
Solution
By washing her hands frequently, Susan would break the "Transmission" link in the chain of infection.
Here's why:
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Portal of Exit: This is the way the infectious agent leaves the reservoir. In the case of influenza, the virus typically exits the body through respiratory secretions when a person coughs or sneezes. Washing hands doesn't directly affect this.
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Portal of Entry: This is the way the infectious agent enters a new host. Influenza usually enters through the respiratory tract when a person inhales droplets in the air. Again, washing hands doesn't directly affect this.
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Transmission: This is the process by which the infectious agent is spread from the reservoir to a new host. Influenza can be spread by direct contact (like touching a contaminated surface and then touching your face). Washing hands frequently with soap and water can remove the virus and prevent this type of transmission.
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Susceptible New Host: This is a person who is at risk of becoming infected. The risk can be reduced by vaccination, but washing hands doesn't directly affect this.
So, by washing her hands frequently, Susan can help to prevent the transmission of the influenza virus to others.
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