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Table 3 Distribution of influenza like illness (ILI) and severe acute respiratory illness (SARI) according to clinical symptoms of influenza and comorbidities during hospital based active surveillance

From: Sentinel surveillance for influenza A viruses in Lahore District Pakistan in flu season 2015–2016

 

Response

ILI (n = 284)

SARI (n = 27)

  

IAV positive (n = 40)

IAV negative (n = 244)

IAV positive (n = 10)

IAV negative (n = 17)

Characteristics

Current or history of fever

No

1 (2.5%)

27 (11.1%)

1 (10%)

1 (5.9%)

Yes

39 (97.5%)

217 (88.9%)

9 (90%)

16 (94%)

Sore throat

No

8 (20%)

53 (21.7%)

1 (10%)

8 (47.1%)

Yes

32 (80%)

191 (78.3%)

9 (90%)

9 (52.9%)

Difficult breathing

No

25 (62.5%)

151 (61.9%)

3 (30%)

7 (41.2%)

Yes

15 (37.5%)

93 (38.1%)

7 (70%)

10 (58.8%)

Sneezing

No

13 (32.5%)

98 (40.2%)

2 (20%)

8 (47.1%)

Yes

27 (67.5%)

146 (59.8%)

8 (80%)

9 (52.9%)

Cough

No

5 (12.5%)

37 (15.2%)

1 (10%)

1 (5.9%)

Yes

35 (87.5%)

207 (84.8%)

9 (90%)

16 (94.1%)

Running nose

No

9 (22.5%)

83 (34%)

3 (30%)

5 (29.4%)

Yes

31 (77.5%)

161 (66%)

7 (70%)

12 (70.6%)

Nausea

No

34 (85%)

215 (88%)

9 (90%)

17 (100%)

Yes

6 (15%)

29 (12%)

1 (10%)

0 (0%)

Vomiting

No

36 (90%)

221 (90.6%)

6 (60%)

14 (82.4%)

Yes

4 (10%)

23 (9.4%)

4 (40%)

3 (17.6%)

Diarrhea

No

38 (95%)

227 (93%)

10 (10%)

13 (76.5%)

Yes

2 (5%)

17 (7%)

0 (0%)

4 (23.5%)

Headache

No

22 (55%)

150 (61.5%)

2 (20%)

6 (35.3%)

Yes

18 (45%)

94 (38.5%)

8 (80%)

11 (64.7%)

Seizures

No

39 (97.5%)

239 (98%)

10 (10%)

16 (94.1%)

Yes

1 (2.5%)

5 (2%)

0 (0%)

1 (5.9%)

Altered consciousness

No

40 (100%)

238 (97.5%)

10 (10%)

16 (94.1%)

Yes

0 (0%)

6 (2.5%)

0 (0%)

1 (5.9%)

Muscle pain

No

19 (47.5%)

110 (45%)

1 (10%)

7 (41.2%)

Yes

21 (52.5%)

134 (56%)

9 (90%)

10 (58.8%)

Joint pain

No

36 (90%)

211 (86.5%)

8 (80%)

15 (88.2%)

Yes

4 (10%)

33 (13.5%)

2 (20%)

2 (11.8%)

Epistaxis

No

39 (97.5%)

223 (91.4%)

10 (10%)

16 (94.1%)

Yes

1 (2.5%)

11 (4.6%)

0 (0%)

1 (5.9%)

Conjunctivitis

No

34 (85%)

213 (87.3%)

8 (80%)

11 (64.7%)

Yes

6 (15%)

31 (12.7%)

2 (20%)

6 (35.3%)

Co-morbidities

Diabetes

No

39 (97.5%)

223 (91.4%)

10 (10%)

15 (88.2%)

Yes

1 (2.5%)

11 (4.6%)

0 (0%)

2 (11.8%)

Heart diseases

No

39 (97.5%)

239 (98%)

10 (10%)

17 (100%)

Yes

1 (2.5%)

5 (2%)

0 (0%)

0 (0%)

Seizures

No

40 (100%)

243 (99.6%)

10 (10%)

16 (94.1%)

Yes

0 (0%)

1 (0.4%)

0 (0%)

1 (5.9%)

Lung diseases

No

40 (100%)

243 (99.6%)

10 (10%)

17 (100%)

Yes

0 (0%)

1 (0.4%)

0 (0%)

0 (0%)

Asthma

No

40 (100%)

238 (97.5%)

10 (10%)

16 (94.1%)

Yes

0 (0%)

6 (2.5%)

0 (0%)

1 (5.9%)

Allergy

No

40 (100%)

239 (98%)

10 (10%)

17 (100%)

Yes

0 (0%)

5 (2%)

0 (0%)

0 (0%)

Hepatitis B

No

40 (100%)

241 (98.8%)

10 (10%)

17 (100%)

Yes

0 (0%)

3 (1.2%)

0 (0%)

0 (0%)

Hepatitis C

No

38 (95%)

231 (94.7%)

10 (10%)

15 (88.2%)

Yes

2 (5%)

13 (5.3%)

0 (0%)

2 (11.8%)

Obesity

No

39 (97.5%)

235 (96.3%)

9 (90%)

16 (94.1%)

Yes

1 (2.5%)

9 (3.7%)

1 (10%)

1 (5.9%)

Malnutrition

No

40 (100%)

243 (99.6%)

10 (10%)

17 (100%)

Yes

0 (0%)

1 (0.4%)

0 (0%)

0 (0%)

Immune deficiency/ HIV

No

40 (100%)

244 (100%)

10 (10%)

17 (100%)

Yes

0 (0%)

0 (0%)

0 (0%)

0 (0%)

Tuberculosis

No

37 (92.5%)

235 (96.3%)

10 (10%)

17 (100%)

Yes

3 (7.5%)

9 (3.7%)

0 (0%)

0 (0%)

Multiple conditions

No

39 (97.5%)

234 (95.9%)

10 (10%)

17 (100%)

Yes

1 (2.5%)

10 (4.1%)

0 (0%)

0 (0%)

Other diseases

No

37 (92.5%)

219 (89.8%)

9 (90%)

16 (94.1%)

Yes

3 (7.5%)

25 (10.2%)

1 (10%)

1 (5.9%)