Table 1 Characteristics of patients with influenza-like illness
Characteristics | Number (%) or median (interquartile range) | |
|---|---|---|
Total cases from Pau da Lima community N = 2,651 | Subgroup of cases from fiocruz cohort site N = 742 | |
Sociodemographics | ||
Age in years | 20 (10–30) | 19 (9–30) |
Male sex | 1,231 (46.4) | 321 (43.3) |
Ethnicity | ||
White | 220 (8.3) | 53 (7.4) |
Black | 1,207 (45.5) | 367 (51.3) |
Mixed/Multiracial | 1,078 (40.6) | 287 (40.1) |
Other | 48 (1.8) | 8 (1.1) |
Clinical Features | ||
Duration of illness in days | 3 (2–4) | 3 (1–3) |
Measured fever >37.8 | 1,267 (47.8) | 357 (48.1) |
Initial symptoms | ||
Cough | 1,607 (60.6) | 450 (60.6) |
Sore throat | 2,058 (77.6) | 580 (78.1) |
Cough and sore throat | 1,014 (38.2) | 288 (38.8) |
Headache | 2,206 (83.2) | 617 (83.1) |
Lethargy | 2,169 (81.8) | 600 (80.8) |
Myalgia | 1,878 (70.8) | 532 (71.7) |
Emesis | 672 (25.3) | 181 (24.4) |
Diarrhea | 336 (12.7) | 92 (12.4) |
Hospitalization | 32 (1.2) | 8 (1.1) |
Death | 3 (0.1) | 1 (0.001) |