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Table 3 Exposure/risk factors related to the presence of anti-OPV neutralizing antibodies

From: Seroprevalence of Orthopoxvirus in rural Brazil: insights into anti-OPV immunity status and its implications for emergent zoonotic OPV

Exposure factors

N (%)

PRNT positive (%)

PRNT negative (%)

P value

Contact with bovines or equids

    

 Yes

169 (70.4)

59 (35.0)

110 (65.0)

0.035

 No

71 (29.6)

15 (21.2)

56 (78.8)

 

Contact with others domestic animalsa

    

 Yes

122 (50.8)

38 (25.0)

84 (75.0)

0.915

 No

118 (49.2)

36 (30.5)

82 (69.5)

 

Contact with wild environmentb

    

 Yes

117 (48.8)

37 (31.6)

80 (68.4)

0.796

 No

123 (51.2)

37 (31.8)

86 (68.2)

 

Practice milking

    

 Yes

91 (37.9)

35 (38.5)

56 (61.5)

0.046

 No

149 (62.1)

39 (26.2)

110 (73.8)

 

Kind of milkingc

    

 Manual

60 (65.9)

26 (43.3)

34 (56.7)

0.193

 Mechanic

31 (34.1)

9 (29.1)

22 (70.9)

 

Number of milkings/dayc

    

 1/day

52 (57.1)

24 (46.2)

28 (53.8)

0.082

 2/day

39 (42.9)

11 (28.2)

28 (71.8)

 

Raw milk/cheese consumption

    

 Yes

217 (90.4)

70 (22.3)

147 (67.7)

0.142

 No

23 (9.6)

4 (13.4)

19 (86.6)

 

Participate in cheese production

    

 Yes

51 (21.3)

24 (47.1)

27 (52.9)

0.005

 No

189 (78.7)

50 (26.5)

139 (73.5)

 

Vaccine taked

    

 Yes

77 (32.1)

44 (57.1)

33 (42.9)

<0.0001

 No

163 (67.9)

30 (19.4)

133 (80.6)

 

Outbreak on property

    

 Yes

20

11 (54.0)

9 (45.0)

0.015

 No

220

63 (26.9)

157 (71.3)

 

Total

240 (100.0)

74 (30.8)

166 (69.2)

 
  1. a: Other domestic animals includes cats, dogs, goats, sheeps, pigs, chickens and ducks; b: Reported by those who were in the wild environment to hunt, gather firewood and fetch some animals of property, such as horse; c: The number of individuals in these two groups is relative to positives in practice milking group (N = 91); d: Individuals who had a vaccine scar on left arm