0002: Infectious Diseases: Types and Causes

What are infectious diseases? Infectious diseases are illnesses caused by ________ that can spread from person to person, animal to person, or through the environment.

• pathogenic microorganisms

• vitamins

• genetic mutations

• physical injuries

Match the pathogen type to its correct example of disease:

• Athlete's foot, ringworm, candidiasis

• Bacteria

• Strep throat, tuberculosis, gonorrhea

• Viruses

• Influenza, COVID-19, HIV/AIDS, hepatitis, HPV

• Fungi

Which of the following is a description of bacteria?

• Non-living particles; antibiotics don’t work, but vaccines often help prevent

• Single-celled organisms; many are treated with antibiotics

• Organisms that thrive in moist areas; may be treated with antifungals

Viruses are ________; antibiotics don’t work, but vaccines often help prevent.

• non-living particles

• bacteria

• living organisms

• fungi

Which type of pathogen causes diseases that may be treated with antifungals and thrive in moist areas?

• Fungi

• Bacteria

• Viruses

• Protozoa

What type of organism is responsible for malaria, lice, and giardiasis?

• Parasites

• Viruses

• Bacteria

• Fungi

Creutzfeldt–Jakob disease (CJD) is caused by which type of infectious agent?

• Prions

• Bacteria

• Viruses

• Fungi

Which of the following is an example of direct contact transmission?

• Sharing needles

• Kissing

• Touching contaminated surfaces

• Coughing

Which transmission mode involves touching contaminated surfaces such as doorknobs or gym equipment with MRSA?

• Indirect Contact

• Airborne Transmission

• Vector-borne Transmission

• Direct Inoculation

Coughing, sneezing, and talking (e.g., flu, COVID-19) are examples of which transmission mode?

• Droplet

• Vector-borne

• Fomite

• Foodborne