Socio-demographic parameters of study subjects
A total of two hundred of female students were enrolled in the current study. The highest proportion of specimens were collected from participants aged 21–24 years old (55.5%), who live in the urban areas (91.5%), unmarried individuals (82.0%), their father’s employment (75%), their mothers are working as housewives (81.0%), their fathers had a university certificate (36.0%), their mothers had a basic certificate (30.5%), and their families had a middle income (87.5%), as listed in Table 1.
Table 1. Socio-demographic parameters of study subjects
Variables
|
Categories
|
No.
|
%
|
Age groups (Years)
|
18-20
|
69
|
34.5
|
21-24
|
111
|
55.5
|
25-28
|
20
|
10.0
|
Residence
|
Rural
|
17
|
8.5
|
Urban
|
183
|
91.5
|
Marital status
|
Single
|
164
|
82.0
|
Married
|
36
|
18.0
|
Father occupation
|
Working
|
150
|
75.0
|
Not Working
|
50
|
25.0
|
Mother occupation
|
Employee
|
38
|
19.0
|
House wife
|
162
|
81.0
|
Father education
|
Illiterate
|
10
|
5.0
|
Basic (Read and write)
|
25
|
12.5
|
Primary
|
41
|
20.5
|
Secondary
|
52
|
26.0
|
University
|
72
|
36.0
|
Mother education
|
Illiterate
|
36
|
18.0
|
Basic (Read and write)
|
61
|
30.5
|
Primary
|
52
|
26.0
|
Secondary
|
33
|
16.5
|
University
|
18
|
9.0
|
Income status
|
Low
|
10
|
5.0
|
Middle
|
175
|
87.5
|
High
|
15
|
7.5
|
Prevalence of anti-Toxoplasma gondii IgG and IgM antibodies
According to Table 2, the study revealed that 12 (6.0%) specimens tested positive for T. gondii IgG antibodies, while the remaining 188 (94.0%) tested negative for both IgG and IgM antibodies.
Table (2). Seroprevalence of anti-Toxoplasma gondii IgG and IgM antibodies among the examined women
Antibody types
|
Examined female students n = 200
|
Positive
|
Negative
|
No.
|
%
|
No.
|
%
|
IgG
|
12
|
6.0
|
188
|
94.0
|
IgM
|
00
|
00
|
200
|
100.0
|
This finding revealed that T. gondii infections were significantly higher among the age groups 18–20 and 21–24 years (41.7%), with a non-significant difference (P > 0.05). Additionally, a higher rate of T. gondii infection was observed among female students living in urban areas (83.3%) and unmarried females (83.8%). Regarding income status, the highest prevalence of T. gondii was reported among middle-income participants (66.7%), with no statistically significant differences (P = 0.920), as listed in Table 3.
Table 3. Prevalence of Toxoplasma gondii according to socio-demographic parameters of study subjects
Variables
|
Categories
|
Toxoplasma gondii antibodies IgG
|
Positive
|
Negative
|
Total
|
P. value*
|
No. (%)
|
No. (%)
|
No. (%)
|
Age group
|
20 –18
|
5.0 (41.7)
|
64 (34.0)
|
69 (34.5)
|
0.877
|
24 –21
|
5.0 (41.7)
|
106 (56.4)
|
111 (55.5)
|
28 –25
|
2.0 (16.6)
|
18 (9.6)
|
20 (10.0)
|
Total
|
12.0 (100)
|
188 (100)
|
200 (100)
|
|
|
|
|
|
780.2
|
Residence
|
Rural
|
2.0 (16.7)
|
15 (8.0)
|
17 (18.5)
|
Urban
|
10.0 (83.3)
|
731 (92.0)
|
183 (91.5)
|
Total
|
12.0 (100)
|
188 (100)
|
200 (100)
|
|
|
|
|
|
0.920
|
Marital status
|
Single
|
10.0 (83.3)
|
154 (81.9)
|
164 (82.0)
|
Maried
|
2.0 (16.7)
|
34 (18.1)
|
36 (18.0)
|
Total
|
12.0 (100)
|
188 (100)
|
200 (100)
|
|
|
|
|
|
0.152
|
Income status
|
Low
|
1.0 (8.3)
|
9.0 (4.8)
|
10 (5.0)
|
Middle
|
8.0 (66.7)
|
167 (88.8)
|
175 (87.5)
|
High
|
3.0 (25.0)
|
12 (6.4)
|
15 (7.5)
|
Total
|
12.0 (100)
|
188 (100)
|
200 (100)
|
P value = P < 0.05: significant)
The present findings showed that a high rate of T. gondii IgG was reported among female students who did not raise cats in their house (66.7%) (P = 0.801), did not change cat litter (66.7%) (P = 0.990), did not contact cats (75.0%) (P = 0.830), did not chew Khat (83.3%) (P = 0.566), did not contact soil (75.0%) (P = 0.246), and ate food from outside home (75.0%) (P = 0.246). There was no statistically significant association between participant behaviors with cats and soil and the prevalence of T. gondii infection (P > 0.05) (Table 4).
Table 4. Prevalence of T. gondii infections according to participant behaviors with cats and soil
Variables
|
Categories
|
Toxoplasma gondii IgG antibodies
|
Positive
|
Negative
|
Total
|
P. value*
|
No. (%)
|
No. (%)
|
No. (%)
|
Raising cats at home
|
Yes
|
4 (33.3)
|
16 (35.1)
|
70 (35.0)
|
0.801
|
No
|
8 (66.7)
|
122 (64.9)
|
130 (65.0)
|
|
|
|
|
|
Changing cat litter
|
Yes
|
4 (33.3)
|
63 (33.5)
|
67 (33.5)
|
0.990
|
No
|
8 (66.6)
|
125 (66.5)
|
133 (66.5)
|
|
|
|
|
|
Direct contact with cats
|
Yes
|
3 (25.0)
|
65 (75.0)
|
68 (34.0)
|
0.830
|
No
|
9 (75.0)
|
124 (25.0)
|
132 (66.0)
|
|
|
|
|
|
Chewing Khat
|
Yes
|
2 (16.7)
|
45 (23.9)
|
47 (23.5)
|
0.566
|
No
|
10 (83.3)
|
143 (76.1)
|
153 (76.5)
|
|
|
|
|
|
Contact with soil
|
Yes
|
3 (25.0)
|
79 (42.0)
|
82 (41.0)
|
0.246
|
No
|
9 (75.0)
|
109 (58.0)
|
118 (59)
|
|
|
|
|
|
Eating food from outside home
|
Yes
|
9 ( 75.0)
|
162 (86.2)
|
171 (85.5)
|
0.288
|
No
|
3 (25.0)
|
26 (13.8)
|
29 (14.5)
|
95% CI = Confidence interval; P value = P < 0.05: significant)
The current findings indicate a significant increase in T. gondii infections among female students who regularly wash their kitchen knives (P = 0.132), refrain from consuming raw or undercooked meat (P = 0.566), avoid untreated water (P = 0.316), wash vegetables before eating (P = 0.134), avoid drinking unpasteurized milk (P = 0.216), and do not receive blood transfusions (P = 0.658). However, there was no statistically significant association between these behaviors and the presence of T. gondii infection (P > 0.05), as presented in Table 5.
Table 5. The prevalence of Toxoplasma gondii infections according to risk factors.
Variables
|
Categories
|
Toxoplasma gondii IgG antibodies
|
Positive
|
Negative
|
Total
|
P. value*
|
No. (%)
|
No. (%)
|
No. (%)
|
Regularly washing kitchen knife
|
Yes
|
9 (75.0)
|
168 (89.4)
|
177 (88.5)
|
0.132
|
No
|
3 (25.0)
|
20 (10.6)
|
23 (11.5)
|
|
|
|
|
|
|
Consumed raw or undercooked meat
|
Yes
|
2 (16.7)
|
45 (23.9)
|
47(23.6)
|
0.556
|
No
|
10 (83.3)
|
143(76.1)
|
153(79.5)
|
|
|
|
|
|
|
Consumed untreated water
|
Yes
|
2 (16.7)
|
57 (30.3)
|
59(29.5)
|
0.316
|
No
|
10 (83.3)
|
131 (69.7)
|
141(70.5)
|
|
|
|
|
|
|
Washing vegetables before eating
|
Yes
|
12 (100)
|
158 (84.0)
|
170(85.0)
|
0.134
|
No
|
00 (0.0)
|
30 (16.0)
|
30(15.0)
|
|
|
|
|
|
|
Drinking unpasteurized milk
|
Yes
|
2 (16.7)
|
64 (34.0)
|
66(33.0)
|
0.216
|
No
|
10 (83.3)
|
124 (66.0)
|
134(67.0)
|
|
|
|
|
|
History of blood transfusion
|
Yes
|
1 (8.3)
|
10 (5.3)
|
11 (5.5)
|
0.658
|
No
|
11 (91.7)
|
178 (49.7)
|
189(94.5)
|
P value = P < 0.05: significant)
Risk factors associated with Toxoplasma gondii infections
A high risk of Toxoplasma gondii infection was observed in female students who washed vegetables before eating (OR = 4.810; 95% CI = 83.432-0.277), followed by raising cats in the house (OR=3.812; CI=1.030-14.108), and a history of blood transfusion (OR=1.618; CI=0.189-13.808), as listed in Table 6.
Table 6. The major of Toxoplasma gondii infections among female students.
Variables
|
OR
|
95% CI
|
P-value
|
Raising cats in house
|
3.812
|
1.030-14.108
|
0.045
|
Changing cat litter
|
0.992
|
0.2877-3.420
|
0.989
|
Direct contact with cat
|
0.635
|
0.166-2.430
|
0.508
|
Chewing khat
|
0.635
|
0.134-3.008
|
0.567
|
Contact with soil
|
0.459
|
0.120-1.753
|
0.255
|
Eating food from outside home
|
0.481
|
0.122-1.896
|
0.296
|
Regulatory waching kitchen knife
|
0.357
|
0.089-1.428
|
0.145
|
Consumed raw of undercooked meat
|
0.635
|
0.134-3.008
|
0.567
|
Consumed untreated water
|
0.459
|
0.097-2.165
|
0.325
|
Washing vegetables before eating
|
4.810
|
0.2774_83.432
|
0.280
|
Drinking unpasteurized milk
|
0.387
|
0.082-1.821
|
0.230
|
History of blood transfusion
|
1.618
|
0.189-13.808
|
0.659
|
95% CI = Confidence interval; P value = P < 0.05: significant)