Volume 16, Number 11—November 2010
Dispatch
Isolation of Ancestral Sylvatic Dengue Virus Type 1, Malaysia
Boon-Teong Teoh, Sing-Sin Sam, Juraina Abd-Jamil, and Sazaly AbuBakar
Table 2
Serum neutralization of ancestral sylvatic dengue virus isolate D1/Malaysia/36046/05, Malaysia*
| Serum group* | Neutralizing antibody titer† |
|---|---|
| Mock | 0 |
| Virus | 0 |
| Medium | 0 |
| SI | 320 |
| SII | 80 |
*Mock, controls treated with serum from healthy (no dengue infection) donors; virus, virus plus diluent; medium, serum and diluent without virus; SI, subgenotype I; SII, subgenotype II.
†Reciprocal of the highest serum dilution that reduced viral foci by 50% (50% focus-reduction neutralization test). Serum from patients infected with sylvatic virus was not available. Virus was treated with serum from patients infected with primary dengue virus type 1 SI or SII.
