The Chain of Infection: Videos & Practice Problems

Which of the following is NOT a required element for an infectious disease to develop?

For a pathogen to cause disease in an individual the individual must be:

The sequence of linked events that must occur for an infection to spread from a source to a vulnerable person is known as the

Placing cooked pasta promptly into the refrigerator reduces the chance of foodborne illness primarily by changing which necessary condition for infection?

Maya, age 2, has untreated HIV and develops persistent oral thrush and frequent lung infections that healthier children usually avoid contracting. Maya is most likely experiencing:

True or False: Pathogens can exist: in the air, in food, in drinking sources, on kitchen surfaces, on people, and on household pets.

True or False: Endogenous skin microorganisms never cause infections because the skin is a nonsterile environment.

Which of the following correctly lists the three components of the epidemiologic triad for Lyme disease and gives a realistic example of each component?