Chapter 1, Problem 3SEPT

When a food handler doesn't wash their hands after using the bathroom and introduces noravirus (cause of vomiting and diarrhea) into the food, what is the best term for the food in the chain of infection when the customers get sick?   Question 6 options:   a)  reservoir   b)  vector   c)  carrier   d)  vehicle

An area of microbiology that is concerned with the occurrence of disease in human populations is a. immunology b. parasitology c. epidemiology d. bioremediation

The epidemiological or disease triangle is a model of disease causation that proposes three factors contribute to an outbreak – an agent that causes the disease, a susceptible host, and an environment that brings the host and agent together. Some general changes within these three factors that may cause an infectious disease to emerge include:     A. changes in populations or behavior of reservoir hosts or intermediate hosts   B. microbial genetic mutation and viral genetic recombination or assortment    C. environmental factors such as an increase in precipitation   D. all of the above    E. none of the above