Table 1

Bacterial isolates from adults with suspected bacterial conjunctivitis attending Royal Liverpool University Hospital (2001–2012) and their resistance to chloramphenicol

200120022003200420052006200720082009201020112012

Positive isolates

115

152

135

161

110

85

90

66

86

84

100

116

All isolates resistant to chloramphenicol (%)

12

(10.4)

7

(4.6)

9

(6.7)

18

(11.2)

18

(16.4)

9

(10.6)

5

(5.6)

2

(3.0)

5

(5.8)

5

(6.0)

14

(14.0)

5

 (4.3)

No. of Gram-positive isolates (%)

95

(82.6)

105

(69.1)

96

(71.1)

101

(62.7)

75

(68.2)

70

(82.4)

70

(77.8)

59

(89.4)

79

(91.9)

66

(78.6)

70

(70.0)

91

(78.4)

Gram-positive isolates resistant to chloramphenicol (%)

6

(6.32)

1

(1.0)

3

(3.1)

3

(3.0)

6

(8.0)

1

(1.4)

3

(4.2)

0

(0)

2

(2.5)

0

(0)

1

(1.4)

2

(2.2)

No. of of Gram- negative isolates (%)

20

(17.4)

47

(30.9)

39

(28.9)

60

(37.3)

35

(31.8)

15

(17.7)

20

(22.2)

7

(10.6)

7

(8.1)

18

(21.4)

30

(30.0)

25

(21.6)

Gram-negative isolates resistant to chloramphenicol (%)

6

(30.0)

6

(12.8)

6

(15.4)

15

(25.0)

12

(34.3)

8

(53.3)

2

(10.0)

2

(28.6)

3

(42.9)

5

(27.8)

13

(43.3)

3

(12.0)