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Table 1 Comparison of Duffy genotypes among uninfected and Plasmodium vivax-infected patients in ethnic groups from Nouakchott, Mauritania.

From: Vivax malaria in Mauritania includes infection of a Duffy-negative individual

ethnic groups

Duffy

number of uninfected patients No = 167 (%[95%CI])

number of P. vivax-infected patients No = 110 (%[95%CI])

p-value

 

genotypes

predicted phenotypes

   

Moor

FYA/FYA

positive

11 (7.6 [3.9-13.3])

3 (3.8 [0.8-11.0])

0.388

 

FYA/FYB

positive

24 (16.6 [11.0-23.8])

22 (28.6 [18.8-40.0])

0.0548

 

FYA/FYB*

positive

5 (3.5 [1.1-7.9])

1 (1.3 [0.0-7.0])

0.6674

 

FYA/FYB ES

positive

19 (13.2 [8.1-19.8])

16 (20.8 [12.4-31.5])

0.1757

 

FYB*/FYB ES

positive

0 (0)

1 (1.3 [0.0-7.0])

0.3484

 

FYB/FYB

positive

22 (15.3 [9.8-22.2])

16 (20.8 [12.4-31.5])

0.3504

 

FYB/FYB*

positive

2 (1.4 [0.2-4.9])

2 (2.6 [0.3-9.1])

0.612

 

FYB/FYB ES

positive

21 (14.6 [9.3-21.4])

16 (20.8 [12.4-31.5])

0.2599

 

FYB ES /FYB ES

negative

40 (27.8 [20.6-35.9])

0 (0)

< 0.0001 +

Poular

FYB ES /FYB ES

negative

8 (100)

0 (0)

ND

Soninke

FYA/FYB ES

positive

0 (0)

2 (100)

0.4667

 

FYB ES /FYB ES

negative

2 (100)

0 (0)

0.4667

Wolof

FYB ES /FYB ES

negative

1 (100)

1 (100)

ND

Unknown

FYA/FYB

positive

0 (0)

6 (26.1 [10.2-48.4])

ND

 

FYA/FYB*

positive

0 (0)

1 (4.3 [0.1-21.9])

ND

 

FYA/FYB ES

positive

0 (0)

2 (8.7 [1.1-28.0])

ND

 

FYB/FYB

positive

0 (0)

1 (4.3 [0.1-21.9])

ND

 

FYB/FYB ES

positive

0 (0)

13 (56.6 [34.5-76.8])

ND

ND

ND

ND

12

7

ND

  1. + Fisher's Exact Test
  2. ND: non determined