HST Unit 1

A carrier, such as insects or rodents, that spreads pathogens from host to host is called a vector.

• True

• False

Sanitization reduces the number of disease-causing microorganisms whereas disinfection destroys or deactivates them.

• True

• False

Which stage in the chain of infection depends on the age and immune resistance of the individual, including the very young, the elderly, and the already ill?

• Infectious agent

• Portal of entry

• Susceptible host

• Mode of transmission

What is the term for the microorganism that initiates the infection?

• Reservoir or host

• Infectious agent

• Portal of exit

• Susceptible host

Where do microorganisms enter the body in the chain of infection?

• Portal of entry

• Mode of transmission

• Reservoir or host

• Susceptible host

What is the location where infectious microorganisms reside, often a moist, warm, dark place or a person?

• Portal of exit

• Infectious agent

• Reservoir or host

• Mode of transmission

Which stage in the chain of infection includes direct and indirect contact, droplets, or through the air?

• Portal of entry

• Mode of transmission

• Susceptible host

• Infectious agent

Bacteria that are resistant to antibiotics develop because ___.

• genetic mutation of the bacteria has occurred

• antibiotics are prescribed unnecessarily

• patients do not take all their prescribed antibiotics

• All answers apply.

Which of the following is not a type of infection?

• Allergic

• Endogenous

• Exogenous

• Opportunistic

Which of the following viruses can have no symptoms but can cause serious liver damage?

• Ebola

• H1N1

• Hepatitis C

• West Nile