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Table 9 Polymyxin (colistin and polymyxin B) resistance (R) estimates and data for Escherichia coli isolates from studies including samples from 2010 and later

From: Review and analysis of the overlapping threats of carbapenem and polymyxin resistant E. coli and Klebsiella in Africa

    

Findings in reports from all study years meeting criteria for generalizability

Resistance estimate category

Nations

Number of reports

Specimens in all reports

Any R

Reports meeting criteria

Total specimens meeting criteria

Range of specimens among studies

Resistant specimens (#)

Resistant specimens (%)

Resistant range (%)

Median R

Algeria

14

2168

Y

9

2155

13–1184

1

 < 0.1

0–0.4

0

Low

Angola

1

23

N

0

0

-

-

-

-

-

Insufficient isolates—resistance not detected

Benin

2

97

N

1

92

-

0

0

-

N/A*

Insufficient isolates—resistance not detected

Burkina Faso

3

262

Y

3

262

26–205

40

15.3

0–61.3

10

High

Cameroon

3

41

Y

1

30

-

30

100

-

N/A*

Insufficient isolates—resistance detected

Chad

1

18

N

1

18

-

0

0

-

N/A*

Insufficient isolates—resistance not detected

Congo

1

89

N

1

89

-

0

0

-

N/A*

Insufficient isolates—resistance not detected

Côte d'Ivoire

1

177

Y

1

177

-

14

7.9

-

7.9

High

Djibouti

1

31

N

1

31

-

0

0

-

N/A*

Insufficient isolates—resistance not detected

Egypt

20

1015

Y

9

431

11–212

17

3.9

0–17.4

0.9

Low

Eritrea

1

14

N

0

0

-

-

-

-

-

Insufficient isolates—resistance not detected

Ethiopia

2

68

Y

1

55

-

50

90.9

-

N/A*

Insufficient isolates—resistance detected

Ghana

1

49

Y

1

49

-

3

6.1

-

N/A*

Insufficient isolates—resistance detected

Kenya

2

7

Y

0

0

-

-

-

-

-

Insufficient isolates—resistance detected

Libya

3

127

N

2

126

51–75

0

0

0–0

0

Resistance not detected

Malawi

1

8

N

0

0

-

-

-

-

-

Insufficient isolates—resistance not detected

Mauritania

1

366

Y

1

366

-

6

1.6

-

1.7

Moderate

Mauritius

1

183

N

1

183

-

0

0

-

0

Resistance not detected

Morocco

5

893

Y

4

890

51–398

47

5.3

0–11.3

0.3

Low

Mozambique

1

33

N

1

33

-

0

0

-

N/A*

Insufficient isolates—resistance not detected

Niger

1

21

Y

1

21

-

4

19

-

N/A*

Insufficient isolates—Resistance detected

Nigeria

8

125

Y

3

111

18–50

1

0.9

0–2.3

0

Low

Sao Tome and Principe

1

1

Y

0

0

-

-

-

-

-

Insufficient isolates—resistance detected

Senegal

1

33

Y

1

33

-

1

3

-

N/A*

Insufficient isolates—Resistance detected

Somalia

1

27

N

0

0

-

-

-

-

-

Insufficient isolates—resistance not detected

South Africa

14

2005

Y

6

1945

16–683

12

0.6

0–0.9

0.15

Low

Sudan

1

71

Y

0

0

-

-

-

-

-

Insufficient isolates—resistance detected ^

Tanzania

2

99

Y

1

30

-

0

0

-

N/A*

Insufficient isolates—resistance detected

Togo

2

6

N

0

0

-

-

-

-

-

Insufficient isolates—Resistance not detected

Tunisia

11

3014

Y

7

3002

26–1075

13

0.4

0–1.3

0

Low

Uganda

2

66

Y

1

61

-

10

16.4

-

N/A*

Insufficient isolates—resistance detected

All reporting countries

109

11,137

Y

58

10,190

11–1184

249

2.4**

–

–

–

  1. Y one or more resistant isolates identified phenotypically or genotypically
  2. N no resistant isolates identified phenotypically or genotypically
  3. ^Only genotypic resistance reported
  4. *Insufficient isolates (< 100) for polymyxin resistance estimate
  5. **Calculation should not be considered an estimate of overall resistance due to varying totals of specimens meeting criteria across nations
  6. -Data not available
  7. –Not calculated
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Antimicrobial Resistance & Infection Control

ISSN: 2047-2994

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