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Table 4 Prevalence of haematic microfilariae in dogs of Iran (n = 6520) until September 2021. Highest records are marked in bold

From: Canine microfilaraemia in some regions of Iran

Region

Province

No. examined

Method

Dirofilaria immitis infection rate (%)

Dirofilaria repens infection rate (%)

Acanthocheilonema reconditum infection rate (%)

Year of study

References

North

Mazandaran

25

Necropsy

4

60.9

NSa

1968

[7]

  

80

Microscopy

15.2

0

2.5

2004–2005

[33]

  

220

Microscopy

10.9

0

0.9

2006–2008

[19]

  

65

Microscopy

7.7

Microscopy: 0

Microscopy: 0

2009

[32]

Serology

4.6

  

66

Microscopy

12.1

0

1.5

2016–2018

This study

PCR

33

0

4.5

  

75

PCR

0

0

0

2018–2019

[34]

 

Gilan

101

Microscopy

51.5

0

4.5

2006–2008

[19]

  

70

Microscopy

42.8

Microscopy: 0

Microscopy: 0

2009

[32]

Serology

51.4

  

27

Necropsy

25.9

NS

NS

2015

[38]

  

28

Microscopy

39.3

0

3.6

2016–2018

This study

PCR

78.6

0

3.6

 

Golestan

110

Microscopy

15.4

4.5

0

2006–2008

[19]

  

65

Microscopy

10.8

Microscopy: 0

Microscopy: 0

2009

[32]

Serology

13.8

Northwest

West Azerbaijan

357

Microscopy

8.7

0

5.04

2001

[39]

  

20

Necropsy

10

NS

NS

2010

[40]

  

160

Microscopy

25.0

0

0

2010

[41]

  

100

Microscopy

3

Microscopy: 0

Microscopy: 0

2014

[42]

Serology

0

 

East Azerbaijan

80

Microscopy

25

0

0

NS

[43]

  

100

Microscopy

30

0

0

2005–2006

[44]

  

384

Serology

13.5

NS

NS

2011

[45]

  

205

Microscopy

Not clear

0

Not clear

2010–2011

[46]

PCR

26.2

19.5

  

121

Microscopy

0

Microscopy: 0

Microscopy: 0

2011–2012

[47]

PCR

11.6

  

100

Microscopy

14

0

0

NS

[48]

  

200

Microscopy

15

0

0

2017

[49]

 

Ardebil

30

Necropsy

26.7

NS

NS

1987

[50]

  

286

Microscopy

34.6

NS

NS

1992

[51]

  

91

Microscopy

20.9

0

0

2009–2011

[52]

15

Necropsy

13.3

  

43

Serology

62.8

NS

NS

2017

[15]

West

Kordestan

74

Microscopy

8.1

0

0

2004–2005

[53]

 

Kermanshah

120

Microscopy

18.3

0

0

2011

[10]

  

51

PCR

0

0

0

2018–2019

[34]

 

Hamedan

157

Microscopy

4.4

Microscopy: 0

9.5

2012

[21]

PCR

4.4

9.5

  

81

PCR

0

0

0

2018–2019

[34]

 

Lorestan

101

Microscopy

0

0

0

2016–2018

This study

PCR

6.9

0

0

 

Chaharmahal-va-Bakhtiari

69

Necropsy

1.5

NS

NS

2007–2009

[54]

Southwest

Khuzestan

23

Necropsy

8.7

NS

NS

1997

[55]

  

119

Microscopy

12.6

0

0

NS

[56]

  

100

Microscopy

5

Microscopy: 0

Microscopy: 0

2007–2008

[57]

Serology

6

  

200

Microscopy

8

Microscopy: 0

Microscopy: 0

2011–2012

[58]

Serology

9.5

  

69

PCR

0

0

0

2018–2019

[34]

East

Khorasan Razavi

138

Microscopy

0

6.4

5

1996–1997

[17]

Southeast

Kerman

100

Serology

10

Microscopy: 0

Microscopy: 0

2008

[59]

Microscopy

2

98

Necropsy

0

  

33

Microscopy

Not clear

Microscopy: 0

Microscopy: 0

2013

[60]

Serology

15.1

  

149

Microscopy

2.7

Microscopy: 0

Microscopy: 0

2013

[61]

Serology

5.4

PCR

4.02

  

100

Microscopy

4

Microscopy: 0

Microscopy: 0

2017–2018

[62]

Serology

10

 

Sistan-va-Baluchestan

87

Microscopy

Not clear

Microscopy: 0

Microscopy: 0

2013

[60]

Serology

27.6

  

60

Microscopy

8.3

0

1.7

2013

[63]

  

99

Microscopy

30.3

0

0

2017

[64]

Centre

Tehran

139

Microscopy

0

0

4.3

NS

[18]

  

138

Microscopy

1.42

0

8.7

1998–1999

[65]

  

311

Microscopy

0

0

0

2017

[16]

PCR

2.3

26

NS

 

Qazvin

44

Microscopy

2.3

0

0

2016–2018

This study

PCR

27.3

0

0

 

Esfahan

105

Microscopy

0.9

0

0.9

2016–2018

This study

PCR

0.9

0

0.9

 

Semnan

122

Microscopy

13.1

0

2.4

NS

[66]

  

112

Microscopy

5.3

0

0

2014

[67]

 

Yazd

78

PCR

0

0

0

2018–2019

[34]

South

Fars

114

Microscopy

9.6

0

0

1995

[68]

  

105

Necropsy

0.9

NS

NS

1998–1999

[69]

  1. aNS: not stated