Table 4 Annual and monthly variation of malaria and parasitaemia in the BHD from 2011 to 2013

2011

 Total tested

465

351

363

526

507

463

447

368

521

547

548

577

5674

 Positive (%)

70 (15.4)

65 (18.5)

90 (24.8)

122 (23.2)

61 (12.0)

76 (16.4)

80 (17.9)

76 (20.7)

67 (12.9)

88 (16.1)

118 (21.5)

126 (21.8)

1039 (18.3)

 95% CI

[12.2, 19.1]

[14.7, 23.1]

[20.5, 29.6]

[19.7, 27.1]

[9.5, 15.3]

[13.2, 20.2]

[14.5, 21.8]

[16.7, 25.2]

[10.2, 16.1]

[13.2, 19.5,]

[18.2, 25.3]

[18.6, 25.5]

[17.3–19.3]

 Mean parasitaemia (T/µl) ± STD

1358.7

6358.2

2021.4

3466.9

467.5

2027.3

1987.4

2662.2

2600.5

2562.2

4885.8

1956.4

2645.2 ± 25,240.0

2012

 Total Tested

479

307

458

414

474

428

495

471

455

479

526

329

5415

 Positive (%)

68 (14.2)

57 (18.6)

62 (13.5)

59 (14.3)

75 (15.8)

79 (18.5)

91 (18.4)

63 (13.4)

71 (15.6)

110 (19.0)

125 (23.8)

60 (18.2)

920 (17.0)

 95% CI

[11.3, 17.7]

[14.7, 23.1]

[10.6, 17.1]

[11.1, 18.1]

[12.7, 19.5]

[15.0, 22.5]

[15.1, 22.1]

[10.5, 16.9]

[12.5, 19.3]

[15.9, 22.5]

[20.2, 27.7]

[14.3, 22.9]

[16.0–18.0]

 Mean parasitaemia (T/µl) ± STD

1352.5

1423.3

1093.7

1650

1758.8

4965.7

1763

1054.4

2779.6

2391.4

3183.6

3957.4

2257.2 ± 18,118.7

2013

 Total tested

513

450

428

574

657

476

449

419

561

602

574

470

6175

 Positive (%)

138 (26.9)

96 (21.3)

99 (23.1)

141 (24.6)

211 (32.1)

109 (22.9)

131 (29.2)

116 (27.7)

161 (28.7)

143 (23.7)

133 (23.2)

108 (23.0)

1586 (25.7)

 95% CI

[23.2, 31.0]

[17.7, 25.5]

[19.3, 27.5]

[21.1, 28.3]

[28.6, 35.9]

[19.3, 27.0]

[25.1, 33.7]

[23.5, 32.3]

[25.0, 32.7]

[20.4, 27.3]

[19.8, 26.9]

[19.3, 27.1]

[24.6–26.8]

 Mean parasitaemia (T/µl) ± STD

4593.2

3027.4

3435.7

4258.4

3919.7

2318.6

2358

3879

3561.5

1480.9

3149.4

2725

3235.2 ± 25,441.2