Skip to main content

Table 2 Species specific asymptomatic malaria infection prevalence and detectability across the study sites using nPCR and microscopy/RDT from 2016-2020

From: The epidemiology and detectability of asymptomatic Plasmodium vivax and Plasmodium falciparum infections in low, moderate and high transmission settings in Ethiopia

Sample source and API

Study sites

Microscopy/RDT

% [n/N]

nPCR

% [n/N]

Proportion of infections detected by microscopy/RDT (%)

Pf

Pv

Mixed

Proportion

(%) of Pv

Pf

Pv

Mixed

Proportion (%) of Pv

Any

Pf

Pv

Community-

(API ≥ 100)

Lare*

33.3

[38/114]

0.0

[0/114]

2.6

[3/114]

7.3

[3/41]

41.2

[42/102]

0.9

[1/102]

3.9

[4/102]

10.6

[5/47]

57.4

[27/47]

56.5

[26/46]

0.00

[0/5]

Abobo¥

17.8

[21/118]

0.0

[0/118]

5.9

[7/118]

25.0

[7/28]

28.1

[32/114]

3.5

[4/114]

2.6

[3/114]

17.9

[7/39]

58.9

[23/39]

57.1

[20/35]

14.3

[1/7]

Meng

10.1

[12/119]

0.0

[0/119]

0.0

[0/119]

0.0

[0/12]

13.5

[16/119]

3.4

[4/119]

0.8

[1/119]

23.8

[5/21]

42.9

[9/21]

47.1

[8/17]

0.0

[0/5]

Total

20.2

[71/351]

0.0

[0/351]

2.8

[10/351]

12.3

[10/81]

26.9

[90/335]

2.7

[9/335]

2.4

[8/335]

15.9

[17/107]

55.1

[59/107]

55.1

[54/98]

5.8

[1/17]

Community – (API ≥ 5&<100)

Mao-komo

16.4 [19/116]

0.0

[0/116]

0.0

[0/116]

0.0

[0/19]

18.9

[22/116]

9.5

[11/116]

0.8

[1/116]

35.3

[12/34]

50.0

[17/34]

65.2

[15/23]

0.0

[0/12]

AMZ

0.0

[0/161]

0.6

[1/161]

1.2

[2/161]

50.0

[3/6]

6.8 [11/161]

3.1

[5/161]

2.5

[4/161]

45.0

[9/20]

10.0

[2/20]

13.3

[2/15]

11.1

[1/9]

Total

6.8

[19/277]

0.4

[1/277]

0.72

[2/277]

13.6

[3/22]

11.9

[33/277]

5.8

[16/277]

1.8

[5/277]

38.9

[21/54]

35.2

[19/54]

44.7

[17/38]

4.8

[1/21]

Low

(API > 0 and < 5)

Gomma§

0.00

[0/115]

0.0

[0/115]

0.0

[0/115]

0.0

[0/115]

2.6

[3/117]

0.8

[1/117]

0.0

[0/117]

25.0

[1/4]

0.0

[0/2]

0.0

[0/1]

0.0

[0/1]

Babile

1.7

[2/117]

0.0

[0/117]

0.0

[0/117]

0.0

[0/2]

11.1 [13/117]

4.3

[5/117]

0.0

[0/117]

27.8

[5/18]

15.4

[2/18]

15.4

[2/13]

0.0

[0/5]

Total

0.9

[2/232]

0.0

[0/232

0.0

[0/232]

0.0

[0/2]

6.8

[16/234]

2.6

[6/234]

0.0

[0/234]

27.3

[6/22]

10.0

[2/20]

14.3

[2/14]

0.0

[0/6]

Community

Grand Total

10.7

[92/860]

0.1

[1/860]

1.4 [12/860]

12.4

[13/105]

16.4

[139/846]

3.7

[31/846]

1.5

[13/846]

24.0

[44/183]

44.2

[80/181]

48.7

[73/150]

4.6

[2/44]

School

(API ≥ 100)

Jawi

1.3

[1/75]

0.0

[0/75]

0.0

[0/75]

0.0

[0/1]

5.3

[4/75]

10.7

[8/75]

8.00

[6/75]

77.8

[14/18]

5.6

[1/18]

10.0

[1/10]

0.0

[0/14]

School

(API ≥ 5 and < 100)

BDZ

0.0

[0/80]

0.0

[0/80]

0.0

[0/80]

0.0

[0/80]

2.50 [2/80]

5.00

[4/80]

2.5

[2/80]

75.0

[6/8]

0.0

[0/8]

0.0

[0/4]

0.0

[0/6]

N. Achefer

0.0

[0/76]

0.0

[0/76]

0.0

[0/76]

0.0

NA

0.0

[0/76]

0.0

[0/76]

0.0

NA

0.0

[0/76]

0.0

NA

0.0

NA

0.0

NA

School

Total

0.4

[1/231]

0.0

[0/231]

0.0

[0/231]

0.0

[0/1]

2.6

[6/231]

5.2

[12/231]

3.5

[8/231]

76.9

[20/26]

3.8

[1/26]

7.1

[1/14]

0.0

[0/20]

  1. AMZ = Arba Minch Zuria, BDZ = Bahir Dar Zuria, N. Achefer = North Achefer, Pf = P. falciparum, Pv = P. vivax, mixed = Pf + Pv, Any = all species detected. Proportion of Pv is calculated together with mixed infections. API = annual parasite index /1000 people. * 12 DBS samples (11 Pf and 1 mixed infection positive by RDT) were missed from Lare for PCR. ¥ 4 DBS samples (3 Pf and 1 mixed infection positive by RDT) were missed from Abobo for PCR. § microscopy was not done for 2 samples that were Pf positive by PCR
Back to article page

Malaria Journal

ISSN: 1475-2875

Contact us