part 2 immune

Question 1

Sporadic

Answer 1

occasional cases

Question 2

Endemic

Answer 2

constantly present

Question 3

Resevoir:

Answer 3

a source of the pathogen in the environment [examples]
Humans
Animals
Inanimate objects

Question 4

Patient zero:

Answer 4

A person identified as the first to become infected with an illness or disease in an outbreak

Question 5

Vector

Answer 5

insects such as mosquitoes, flies, ticks, fleas and lice that transmit diseases from one living thing to another

Question 6

fomite:

Answer 6

any object or substance capable of carrying infectious organisms and transferring them from one individual to another.

Question 7

Emerging infection:

Answer 7

An infectious disease that has newly appeared in a population

Question 8

Epidemiology:

Answer 8

The study of an illness

Question 9

Prevalence:

Answer 9

the number of times an illness occurs

Question 10

Morbidity

Answer 10

ratio of sick people to total number of people

Question 11

Mortality rate:

Answer 11

the number of people who died from a disease