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Table 2 Recalculated prevalence of Pfcrt- 76T (mutant Pfcrt ) from previous studies in Tanzania

From: Trends in chloroquine resistance marker, Pfcrt-K76T mutation ten years after chloroquine withdrawal in Tanzania

Region

Sites

Reported frequency %

Mixed

Recalculated prevalence (%)

Year

Number of samples (n)

Reference

Mtwara

Masasi

78.9

13

79.7

1999

71

[20]

Mbeya

Matema and Mbeya urban

43

6

46.7

2005

86

[21]

Coastal

Kibaha

86.2

1

86.2

1998

51

[22]

Bagamoyo

64.5

16

70.6

2002

76

[23]

16

29

27.9

2004

175

Bagamoyo

52

23

60.8

2004

102

[18]

28.6

11

41.6

2006

49

18.3

43

30

2007

257

16.6

28

27.4

2008

187

19.4

2

24.2

2010

31

11.4

5

14.4

2011

123

Bagamoyo

51.9

23

60.8

2004

102

[24]

Tanga

Muheza

82.9

6

85

2003

41

[25]

Korogwe

70.5

42

76.7

2003

156

[26]

Korogwe

70.3

42

77.4

2003

155

[17]

63.1

55

72.4

2004

163

67.1

24

72

2007

73

49.3

21

75

2006

76

Mwanza

Igombe

16.8

0

16.8

2010

77

[27]

Igombe

11.1

0

11.1

2011

90

[28]

  1. Prevalence was recalculated as a percentage of the total when the number of mixed infections is added to both single wild types and mutants.