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Table 4 Frequencies of SNPs and haplotypes in pfmdr1 and pfcrt genes over time

From: Temporal evolution of the resistance genotypes of Plasmodium falciparum in isolates from Equatorial Guinea during 20 years (1999 to 2019)

Year

(N)

pfmdr1

pfcrt

pfmdr1 + pfcrt

86Y

1246Y

86Y/1246Y

76T

86Y/76T

N (%)

95% CI

N (%)

95% CI

N (%)

95% CI

N (%)

95% CI

N (%)

95% CI

1999

(60)

37 (61.6%)

49.02–72.91

4 (6.6%)

2.62–15.93

1 (1.6%)

0.29–8.86

43 (71.6%)

59.23–81.49

32 (53.3%)

40.89–65.37

2001

(102)

98 (96.1%)

90.35–98.46

24 (23.5%)

16.35–32.63

21 (20.5%)

13.88–29.43

87 (85.3%)

77.15–90.88

84 (82.3%)

73.82–88.54

2004/5

(262)

220 (83.9%)

79.04–87.92

3 (1.1%)

0.39–3.31

3 (1.1%)

0.39–3.31

200 (76.3%)

70.83–81.08

170 (64.8%)

59.93–70.41

2006

(158)

113 (71.5%)

64.04–77.98

1 (0.6%)

0.11–3.5

1 (0.6%)

0.11–3.5

107 (67.7%)

60.09–74.52

76 (48.1%)

40.45–55.84

2011

(163)

114 (69.9%)

62.51–76.45

0

0–2.30

0

0–2.30

114 (69.9%)

62.51–76.45

78 (47.8%)

40.32–55.48

2013

(170)

125 (73.5%)

66.43–79.59

3 (1.7%)

0.6–5.06

1 (0.6%)

0.10–3.26

109 (64.1%)

56.67–70.94

81 (47.6%)

40.27–55.12

2016

(169)

47 (27.8%)

21.61–35

0

0–2.22

0

0–2.22

33 (19.5%)

14.26–26.15

12 (7.1%)

4.11–12

2019

(n139)

19 (13.6%)

8.93–20.36

0

0–2.29

0

0–2.29

4 (2.8%)

1.12–7.17

0

0–2.29

p-value

0

 

0

 

0

 

0

 

0

 
  1. p-value ≤ 0.05 is taken as significance value. “No ptmdr1-86/pfcrt-76 double mutant detected in 2019, could be due to sample size”
  2. Frequencies of SNPs detected in both pfmdr1 and pfcrt genes, as well as frequencies of haplotypes both within pfmdr1 (86Y/1246Y) and the combination of pfmdr1 and pfcrt (86Y/76T) for each year included in the study