Table 2 Serotype distribution and viral load of NS1 positive patients
| Â | Number of specimens | Percent (%) |
|---|---|---|
Serotype | ||
 Type 1 | 276 | 92.0 |
 Type 2 | 22 | 7.3 |
 Type 3 | 1 | 0.33 |
 Type 4 | 1 | 0.33 |
Viral load (copies/mL) | ||
 Serotype 1 | ||
  ≤ 103 | 4 | 1.45 |
  >  103 | 272 | 98.55 |
 Serotype 2 | ||
  ≤ 103 | 0 | 0 |
  >  103 | 22 | 100 |
 Serotype 3 | ||
  ≤ 103 | 0 | 0 |
  >  103 | 1 | 100 |
 Serotype 4 | ||
  ≤ 103 | 0 | 0 |
  >  103 | 1 | 100 |