Table 3 Frequency (percentage) of subjects reporting symptoms against level of cyanocyanobacteria exposure: low (cell surface area <2.4 mm2/mL), intermediate (2.4 – 12.0 m 12.0 mm2/mL) and high (>12.0 mm2/mL).
Symptoms | Cyanobacteria exposure | ||||
|---|---|---|---|---|---|
Low n(%) | Intermediate n (%) | High n (%) | p-value | ||
Any symptom | 0.42 | ||||
None | 569 (70) | 134 (74) | 99 (67) | ||
Mild | 147 (18) | 28 (16) | 34 (23) | ||
Moderate/severe | 94 (12) | 18 (10) | 14 (10) | ||
Ear symptoms | 0.75 | ||||
None | 895 (96) | 199 (98) | 159 (96) | ||
Mild | 21 (2) | 3 (2) | 4 (2) | ||
Moderate/severe | 12 (1) | 1 (1) | 3 (2) | ||
Eye symptoms | 0.75 | ||||
None | 872 (94) | 196 (95) | 154 (95) | ||
Mild | 41 (4) | 5 (2) | 6 (4) | ||
Moderate/severe | 18 (2) | 5 (2) | 3 (2) | ||
Gastro-intestinal symptoms | 0.89 | ||||
None | 871 (94) | 199 (95) | 158 (95) | ||
Mild | 30 (3) | 5 (2) | 5 (3) | ||
Moderate/severe | 27 (3) | 5 (2) | 3 (2) | ||
Respiratory symptoms | 0.57 | ||||
None | 691 (86) | 169 (88) | 122 (82) | ||
Mild | 87 (11) | 19 (10) | 22 (15) | ||
Moderate/severe | 29 (4) | 5 (3) | 5 (3) | ||
Cutaneous symptoms | 0.52 | ||||
None | 875 (95) | 197 (96) | 159 (96) | ||
Mild | 23 (3) | 6 (3) | 6 (4) | ||
Moderate/severe | 20 (2) | 2 (1) | 1 (1) | ||