Table 3.
Sample and patient characteristics in Serrana, Brazil, before (epidemiological week 11, 2020, to 34, 2020) and after (epidemiological week 35, 2020, to 5, 2021) the implementation of an enhanced public health surveillance system.
| Characteristics | Epidemiological week 11,2020 to 34, 2020 | Epidemiological week 35, 2020 to 5, 2021 | P-value |
|---|---|---|---|
| Samples | |||
| Number of collection (n) | 2770 | 6728 | |
| Positivity (%) | 36.7 | 26.1 | <0.001 |
| Age | |||
| Median (IQR), y | 40 (30–54) | 35 (25–50) | <0.001 |
| <18 years (%) | 3.1 | 8.5 | <0.001 |
| ≥18 years (%) | 95.9 | 91.1 | |
| Unknown (%) | 1.0 | 0.4 | |
| Sex | |||
| Female (%) | 56.2 | 57.4 | >0.288 |
| Male (%) | 43.8 | 42.6 | |
| Symptoms at disease onset | |||
| At least one symptom (%) | 84.4 | 97.1 | <0.001 |
Source: Epidemiological Surveillance of Serrana.