Epidemiological survey of cryptosporidiosis in Anhui Province China

Table 1 The distribution of infection of Cryptosporidium parvum in Anhui Province (n, %)

Area	n	Stain of auramine-phenol		Stain of auramine-phenoland modified acid-fast
		Positive number	Positive rate	Positive number	Positive rate
Hefei	500	4	0.80	6	1.20
Bengbu	349	2	0.57	4	1.15
Huainan	939	10	1.06	13	1.38
Lu'an	447	4	0.89	6	1.34
Wuhu	464	4	0.86	6	1.29
Huaibei	440	5	1.14	8	1.82
Huangshan	500	5	1.00	7	1.40
Fuyang	500	6	1.20	9	1.80
Chuzhou	423	4	0.95	6	1.42
Anqing	413	3	0.73	5	1.21
Suzhou	446	5	1.12	7	1.57
Total number	5421	53	0.98	74	1.33a

^aP < 0.05, χ² = 3.8864.

Table 2 The distribution of infection of Cryptosporidium parvum in different groups (n, %)

Area	n	Stain of auramine-phenol		Stain of auramine-phenoland modified acid-fast
		Positive number	Positive rate	Positive number	Positive rate
Infant	889	21	2.36b	28	3.15 d
Pupil	1098	7	0.64	9	0.82
Middle school student	1092	7	0.64	9	0.82
College student	969	5	0.52	8	0.83
Adult	1059	6	0.57	9	0.85
Patients with diarrhea	278	5	1.80a	8	2.88 d
Patients with immunodeficency	36	2	5.56b	3	8.33 d
Total number	5421	53	0.98	74	1.33

^aP < 0.05,

^bP < 0.01, ^dP < 0.01, vs college students.

Table 3 The distribution of infection of Cryptosporidium parvum in different sexes (n, %)

Area	n	Stain of auramine-phenol		Stain of auramine-phenoland modified acid-fast
		Positive number	Positive rate	Positive number	Positive rate
Males	3474	37	1.07 d	59	1.70 d
Females	1947	17	0.87	30	1.54
Total number	5421	54	0.99	89	1.64

^dP > 0.05, vs female.

Table 4 The distribution of infection of Cryptosporidium parvum in urban and rural areas (n, %)

Area	n	Stain of auramine-phenol		Stain of auramine-phenoland modified acid-fast
		Positive number	Positive rate	Positive number	Positive rate
Urban areas	3276	26	0.79a	36	1.13a
Rural areas	2145	27	1.26	38	1.72
Total number	5421	53	0.98	74	1.33

^aP < 0.05, vs Rural.

Table 5 The detective results of specific antibody against Cryptosporidium parvum (n,%)

Oocyst	n	IgG		IgM		IgG + IgM
		Positive number	Positive rate	Positive number	Positive rate	Positive number	Positive rate
Positiveb	41	26	63.41	7	17.07	8	19.51
Negative	20	0	0.00	0	0.00	0	0.00

^bP < 0.01, vs Negative, χ² = 25.0945.

Table 6 The results of T subsets of patients with positive of Cryptosporidium parvum in stool (n, ¯x ± s,%)

cryptosporidium parvum	n	CD3+	CD4+	CD8+	CD4+/CD8+
Positive	41	65.83 ± 6.55a	43.55 ± 6.10a	28.43 ± 4.32	1.58 ± 0.32b
Negative	20	55.87 ± 7.23	39.26 ± 6.43	30.04 ± 5.67	1.36 ± 0.41

^aP < 0.05,

^bP < 0.05, vs Negative.

Table 7 Clinical symptoms after being infected by Cryptosporidium parvum (n,%)

Group	n	percentage
Without symptom	62	83.78
Symptom	12	16.22
General symptom	2	2.70
Upper digestive tract symptom	1	1.35
Lower digestive tract symptom	2	2.70
Upper and lower digestive tract symptom	3	4.05
General and upper digestive tract symptom	1	1.35
General and lower digestive tract symptom	2	2.70
General and upper, lower digestive tract symptom	1	1.35
Total number	74	100.00

General symptom:acratia, fever; upper digestive tract symptom:anorexia, nausea, vomiting; Lower digestive tract symptom:abdominal distension, abdominal pain, loose stool, watery stool