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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

From: Outbreak of viral hemorrhagic fever caused by dengue virus type 3 in Al-Mukalla, 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
  1. * Of these 97 NS1-positive patients, 79 (81.4%) patients were also positive for IgM.
  2. † Of these 69 IgM-positive patients, 50 (72.5%) patients were also NS1-positive.
  3. ‡ Considered to have acute dengue and past exposure to another dengue serotype based on positive NS1 and IgG.
  4. § Of these 94 IgM/IgG-positive patients, 29 (30.9%) patients were also NS1-positive.