Table 1.
RT-PCR for dengue virus RNA and ELISA results for detection of dengue virus NS1, IgM and IgG antibodies in human sera in Almukalla, Yemen
|
Categories of tested groups |
No. tested |
No. of patients positive for dengue RNA (%) |
No. of patients positive for NS1 antigen (%) |
No. of patients positive for any dengue virus antibodies (%) |
No. of patients positive for IgM, IgG, or both (%) |
||
|---|---|---|---|---|---|---|---|
| IgM alone (%) | IgG alone (%) | IgG & IgM (%) | |||||
| Acute cases |
207 |
2 (1) |
97 (46.9)* |
169 (81.6) |
69 (33.3)† |
6 (2.9)‡ |
94 (45.4)§ |
| Contacts | 15 | 0 | 0 | 2 (13.3) | 1 (6.7) | 1 (6.7) | 0 |
* Of these 97 NS1-positive patients, 79 (81.4%) patients were also positive for IgM.
† Of these 69 IgM-positive patients, 50 (72.5%) patients were also NS1-positive.
‡ Considered to have acute dengue and past exposure to another dengue serotype based on positive NS1 and IgG.
§ Of these 94 IgM/IgG-positive patients, 29 (30.9%) patients were also NS1-positive.