Student Name Number Absorbance Blank A1 0.099 Negative Control A2 0.154 Positive
ID: 196310 • Letter: S
Question
Student Name
Number
Absorbance
Blank
A1
0.099
Negative Control
A2
0.154
Positive Control
A3
1.219
Calibrator Factor
A4
1.617
Student 1
A6
0.075
Student 2
A7
0.216
Student 3
A8
0.267
Student 4
A9
0.15
Student 5
A10
1.021
Student 6
A11
0.192
Student 7
A12
0.251
Student 8
B1
0.2
Student 9
B2
0.183
Student 10
B3
0.188
Student 11
B4
0.222
Student 12
B5
0.629
Student 13
B6
0.131
Student 14
B7
0.104
Student 15
B8
0.209
Student 16
B9
0.125
Student 17
B10
0.276
Student 18
B11
1.638
Student 19
B12
0.16
Student 20
C1
0.166
Student 21
C2
0.096
Student 22
C3
0.783
Student 23
C4
0.064
Use the above data to calculate the prevalence of Toxoplasma among the students in the parasitology class. You will first need to determine which samples are positive for Toxoplasma, and then you can calculate the prevalence. Also provide the mean antibody index for the samples.
Student Name
Number
Absorbance
Blank
A1
0.099
Negative Control
A2
0.154
Positive Control
A3
1.219
Calibrator Factor
A4
1.617
Student 1
A6
0.075
Student 2
A7
0.216
Student 3
A8
0.267
Student 4
A9
0.15
Student 5
A10
1.021
Student 6
A11
0.192
Student 7
A12
0.251
Student 8
B1
0.2
Student 9
B2
0.183
Student 10
B3
0.188
Student 11
B4
0.222
Student 12
B5
0.629
Student 13
B6
0.131
Student 14
B7
0.104
Student 15
B8
0.209
Student 16
B9
0.125
Student 17
B10
0.276
Student 18
B11
1.638
Student 19
B12
0.16
Student 20
C1
0.166
Student 21
C2
0.096
Student 22
C3
0.783
Student 23
C4
0.064
Explanation / Answer
Toxoplasm is the infecting parasite. Here the values given are the antibody raised or the titre of the activity of the prevalence of toxoplasm .
Student 5 a10 has high prev/alence and the student 18 B11 has also high levels. They are above value 1.
The mean is 1.021+1.638/2=1.329