Multiple Choice
Which is the most common type of biological vector of human disease?
- viruses
- bacteria
- mammals
- arthropods
A mosquito bites a person who subsequently develops a fever and abdominal rash. What type of transmission would this be?
- mechanical vector transmission
- biological vector transmission
- direct contact transmission
- vehicle transmission
Cattle are allowed to pasture in a field that contains the farmhouse well, and the farmer’s family becomes ill with a gastrointestinal pathogen after drinking the water. What type of transmission of infectious agents would this be?
- biological vector transmission
- direct contact transmission
- indirect contact transmission
- vehicle transmission
A blanket from a child with chickenpox is likely to be contaminated with the virus that causes chickenpox (Varicella-zoster virus). What is the blanket called?
- fomite
- host
- pathogen
- vector
Which of the following would NOT be considered an emerging disease?
- Ebola hemorrhagic fever
- West Nile virus fever/encephalitis
- Zika virus disease
- Tuberculosis
Which of the following would NOT be considered a reemerging disease?
- Drug-resistant tuberculosis
- Drug-resistant gonorrhea
- Malaria
- West Nile virus fever/encephalitis
Which of the following factors can lead to reemergence of a disease?
- A mutation that allows it to infect humans
- A period of decline in vaccination rates
- A change in disease reporting procedures
- Better education on the signs and symptoms of the disease
Why are emerging diseases with very few cases the focus of intense scrutiny?
- They tend to be more deadly
- They are increasing and therefore not controlled
- They naturally have higher transmission rates
- They occur more in developed countries