Reference no: EM132669808

A. Differentiate the following terms for waste products; 1. Garbage 2. Sewage 3. Refuse 4. Rubbish

B. Differentiate the following terms commonly used in epidemiology;

1. case fatality rate

2. biostatistics

3. contact

4. primary case

5. secondary case

6. index case

7. survival rate

8. primary attack rate

9. secondary attack rate

C. What is potable water?what is the amount of residual chlorine to ensure bacterilogical safety of water? How about the permissible limit of fluorine in drinking water?

D. Of all the hospital patients with infections, one-third do not enter the hospital with an infection. How do they acquire these infection? What is the method of transmission of these infections? what is the reservoir of infections?

E. Why are some organism that constitute the normal microbiota described as commensals, whereas others are described as mutualistic?

F. Indicate whether each of the following conditions is typical of subacute, chronic, or acute infections.

1. The patient experiences a rapid onset of malaise; symptoms last 5 days.

2. The patient experiences cough and breathing difficulty for months.

3. The patient has no apparent symptoms and is known carrier.