Volume 10, Number 4—April 2004
Research
Myanmar Dengue Outbreak Associated with Displacement of Serotypes 2, 3, and 4 by Dengue 1
Hlaing Myat Thu*†, Kym Lowry*, Thein Thein Myint‡, Than Nu Shwe‡, Aye Maung Han‡, Kyu Kyu Khin§, Kyaw Zin Thant†, Soe Thein†, and John Aaskov*
Table 2
Dengue virus (DENV) serotypes recovered from patients in Yangon Children’s Hospital, 1998–2001
| 1998 | 1999 | 2000 | 2001 | |
|---|---|---|---|---|
| Clinical cases | 4,596 | 2,342 | 1,100 | 5,616 |
| Paired sera | 709 | 739 | 501 | 1870 |
| Confirmed cases | 496 | 373 | 274 | 1,481 |
| Sera with HI titer <80 for virus isolation | 54 | 30 | 42 | 236 |
| DENV-1 isolates | 9 | 2 | 6 | 115 |
| DENV-2 isolates | 5 | 5 | 1 | 1 |
| DENV-3 isolates | 9 | 3 | 1 | 3 |
| DENV-4 isolates | 1 | 1 | 0 | 0 |
| Mixed virus isolates | 0 | 0 | 0 | 2 (dengue 1+2) |
