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Table 2 Clinical Profile and Risk Factors over the Pre-Epidemic, Epidemic, and Post-Epidemic Periods in Africhol Surveillance Data in Conakry, Guinea from 2011 to 2013

From: Temporo-spatial dynamics and behavioural patterns of 2012 cholera epidemic in the African mega-city of Conakry, Guinea

 

Pre-epidemic period

Epidemic period

Post-epidemic period

 

Number(%)

PRa (95% CI)

Number(%)

Number(%)

PRa (95% CI)

CLINICAL SYMPTOMS

Diarrhea quality

     

 Watery

63/65 (97%)

1.0 (1.0–1.1)

1143/1232 (93%)

34/39 (87%)

0.94 (0.83–1.1)

 Rice water

9/65 (14%)

0.18 (0.10–0.33)

942/1208 (78%)

32/38 (84%)

1.1 (0.94–1.2)

 Bloody

0/63 (0)

0

10/1229 (0.8%)

0/39 (0)

0

 Mucous

9/64 (14%)

10 (4.7–22)

17/1226 (1.4%)

5/39 (13%)

9.3 (3.6–24)

Vomiting

60/65 (92%)

1.1 (0.97–1.1)

1062/1203 (88%)

33/38 (87%)

0.98 (0.87–1.1)

Dehydration

61/65 (94%)

3.0 (2.7–3.4)

369/1194 (31%)

33/37 (89%)

2.9 (2.5–3.3)

Dyspnea

3/62 (4.8%)

1.9 (0.60–6.1)

30/1181 (2.5%)

5/36 (14%)

5.5 (2.3–13)

Altered consciousness

9/64 (14%)

2.3 (1.2–4.4)

72/1184 (6.1%)

11/36 (31%)

5.0 (2.9–8.6)

Coma

2/64 (3.1%)

7.5 (1.5–38)

5/1195 (0.4%)

1/35 (2.9%)

6.8 (0.82–57)

PRIMARY WATER SOURCE

 Piped

13/65 (20%)

0.97 (0.59–1.6)

294/1207 (21%)

2/39 (5.1%)

0.25 (0.06–0.96)

 Public tap

40/65 (62%)

0.86 (0.70–1.0)

868/1207 (72%)

15/39 (39%)

0.53 (0.36–0.80)

 River/shallow well/lake

1/65 (1.5%)

0.48 (0.07–3.4)

39/1207 (3.2%)

21/39 (54%)

17 (11–25)

 Other

11/65 (17%)

4.0 (2.2–7.3)

51/1207 (4.2%)

1/39 (2.6%)

0.61 (0.08–4.3)

WATER TREATMENT

 Drinking treated water

6/61 (9.8%)

0.31 (0.14–0.66)

358/1111 (32%)

3/35 (12%)

0.37 (0.13–1.1)

 If treated, treated with chlorine

6/6 (100%)

1.0 (0.89–1.2)

331/342 (97%)

2/2 (100%)

1.0 (0.81–1.3)

RECENT BEHAVIORAL RISK FACTORS

 Contact with suspected cholera case

1/64 (1.6%)

0.08 (0.01–0.53)

241/1167 (21%)

4/39 (10%)

0.50 (0.19–1.3)

 Funeral participation

0 (0)

0

18/1196 (1.5%)

0/39 (0)

0

 Social gathering participation

3/64 (4.7%)

1.0 (0.32–3.1)

56/1195 (4.7%)

1/39 (2.6%)

0.55 (0.08–3.9)

 Visited market

6/65 (9.2%)

0.37 (0.17–0.80)

294/1185 (25%)

2/39 (5.1%)

0.21 (0.05–0.80)

 Travel

3/65 (4.6%)

1.8 (0.57–5.9)

30/1191 (2.5%)

5/39 (13%)

5.1 (2.1–12)

  1. aPrevalence ratios (PR) and 95% confidence intervals (CI) were calculated for the pre-epidemic and post-epidemic periods using the epidemic period as the reference