Help with epidemiology Each heavy Redblack line between the

Help with epidemiology!!!!!!

Each heavy Red/black line between the s on the Figure below represents an episode of infectious mononucleosis during 2016, and each line represents a person with the disease in a population of 100 people. For 2016, compute rates for mononucleosis per 1000. Incidence The period prevalence during 2016 What is the prevalence of the disease during July, 2016? (point prevalence)

Solution

Total number of cases = among 1700; one line represents 100 people so maximum case level is 17 and then population will be 1700.

December 2015 (started)

16

Mid January to April

12+7 =19

In between January and July

11

From May to October (During July)

3+14 =17

In between July and December

7+17 = 24

From December 2016

12

Total cases

99

Incidence = [newly diagnosed cases / sample size]

As the population has started with 16 cases but we discovered 99-16 = 83 newly diagnosed cases, for 1700 people.

Incidence = 83/1700= 0.049 per 1000 people

B.

Prevalence rate of mononucleosis = total cases/ sample population = 99/1700 = 0.058

C.

During July, there are 17 cases in population size of 1400 (minimum sample size).

Prevalence = 17/1400 = 0.0121

All proportions count for 1000 people.

December 2015 (started)	16
Mid January to April	12+7 =19
In between January and July	11
From May to October (During July)	3+14 =17
In between July and December	7+17 = 24
From December 2016	12
Total cases	99