Table 3.
Serologic Summary of the Subset of Febrile Patients, Encephalitic Patients, and Asymptomatic Blood Donors Tested by Plaque Reduction Neutralization Test
| |
Study group |
|||
|---|---|---|---|---|
| PRNT diagnosis | Febrile patients | Encephalitic patients | Blood donors | Total |
| WNV | 4 | —a | 2 | 6 (4%)b |
| SLEV | — | — | — | — |
| DENV-1 | 44 | 9 | 11 | 64 (43.5%) |
| DENV-2 | 20 | 1 | 2 | 23 (15.6%) |
| DENV-3 | — | — | — | |
| DENV-4 | — | — | — | — |
| DENV (undetermined serotype) | 16 | 3 | 5 | 24 (16.3%) |
| Secondary flavivirus infection | 22 | — | — | 22 (14.9%) |
| Negative | 6 | 1 | 1 | 8 (5.4%) |
| Total | 112 | 14 | 21 | 147 (100%) |
a
0.
b
All individuals seropositive for WNV by PRNT were negative for WNV IgM, suggesting that these infections were not recent.
PRNT, plaque reduction neutralization test; SLEV, St. Louis encephalitis virus.