Table. Results of indirect immunofluorescence assays performed on serum and CSF samples from patient with suspected WNV infection, Germany, 2011*.
| Virus used as antigen | Ig class | Antibody titer in serum |
Antibody titer in CSF |
|||||
|---|---|---|---|---|---|---|---|---|
| Day 4 | Day 6 | Day 11 | Day 26 | Day 4 | Day 6 | |||
| WNV | IgG | 320 | 1,280 | 5,120 | 10,240 | 20 | 40 | |
| WNV | IgM | 160 | 160 | 1,280 | 1,280 | 10 | 20 | |
| SLEV | IgG | 80 | 80 | 1,280 | 2,560 | <10 | <10 | |
| SLEV | IgM | 20 | 20 | 40 | <20 | <10 | <10 | |
| JEV | IgG | ND | <20 | ND | 1,280 | ND | <10 | |
| JEV | IgM | ND | <20 | ND | <20 | ND | <10 | |
| DENV | IgG | ND | 80 | ND | 640 | ND | <10 | |
| DENV | IgM | ND | 20 | ND | <20 | ND | <10 | |
| YFV | IgG | ND | <20 | ND | ND | ND | <10 | |
| YFV | IgM | ND. | <20 | ND | ND | ND | <10 | |
| TBEV | IgG | ND | <20 | ND | ND | ND | <10 | |
| TBEV | IgM | ND | <20 | ND | ND | ND | <10 | |
*CSF, cerebrospinal fluid; WNV, West Nile virus; SLEV, St. Louis encephalitis virus; JEV, Japanese encephalitis virus; ; ND, not done; DENV, dengue virus; YFV, yellow fever virus; TBEV, tick-borne encephalitis virus. Titers <20 for serum and <10 for CSF are considered negative.