18 Questions
Which mode of transmission refers to transfer of an infectious agent from a reservoir to a host by suspended air particles?
Airborne
How is infectious mononucleosis ('kissing disease') primarily spread from person to person?
Direct contact through skin-to-skin contact or kissing
Which mode of transmission is classified as direct because transmission is by direct spray over a few feet?
Droplet spread
What kind of contact refers to skin-to-skin contact, kissing, and sexual intercourse as modes of transmission?
Direct contact
Which mode of transmission involves contact with soil or vegetation harboring infectious organisms?
Direct contact
In which mode of transmission does indirect transmission occur through inanimate objects (vehicles) or animate intermediaries (vectors)?
Direct contact
Which route of transmission is utilized by the influenza virus?
Airborne transmission
Which mode of transmission involves the use of hands carrying pathogens from feces to food or water?
Indirect contact transmission
In what manner do pathogens causing gastroenteritis usually exit the source host?
Through feces
Which portal of entry is utilized by syphilis-causing pathogens?
Mucous membranes
What is a characteristic feature of indirect transmission of hookworm?
Enter through the skin
Which host factor affects an individual's ability to resist infection or limit pathogenicity?
Age
Which of the following is an example of airborne transmission?
A child contracting measles after a measles patient left the doctor's office
What term is used to describe the dried residue of droplets less than 5 microns in size?
Droplet nuclei
Which of the following is an example of indirect transmission?
Eating food that supports the growth of Clostridium botulinum
What term is used to describe inanimate objects like handkerchiefs, bedding, or surgical scalpels that can transmit infectious agents?
Fomites
Which of the following is an example of direct transmission?
A fly carrying Shigella on its appendages
What term is used to describe organisms like mosquitoes, fleas, and ticks that can carry infectious agents?
Vectors
Test your knowledge on the different classifications for modes of transmission, including direct contact, airborne, droplet spread, vehicleborne, and vectorborne transmission. Learn about how infectious agents are transferred from a reservoir to a susceptible host through various means.
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