Question

1.which is the most common type of biological vector of human disease?
a. viruses
b. bacteria
c. mammals
d. arthropods

1. 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?

a. fomite
b. host
c. pathogen
d. vector

1. which of the following would not be considered an emerging disease?

a. ebola hemorrhagic fever
b. west nile virus fever/encephalitis
c. cheaper but less effective than pig insulin for treating diabetes.
d. tuberculosis

Explanation:

1. Arthropods (such as mosquitoes, ticks) are the most common biological vectors for human diseases. Viruses and bacteria are pathogens, not vectors. Mammals can be vectors but are less common than arthropods.
2. A fomite is an inanimate object (like a blanket) that can carry and transmit pathogens. A host is a living organism that harbors a pathogen. A pathogen is the disease - causing agent (like the virus here). A vector is a living organism (like an insect) that transmits a pathogen.
3. Tuberculosis is a well - known and long - recognized disease. Ebola hemorrhagic fever and West Nile virus fever/encephalitis are emerging diseases. Option c is not a disease name.

Answer:

1. d. arthropods
2. a. fomite
3. d. Tuberculosis