Table 3 Detection of dengue and chikungunya by RDT and ELISA in the 293 subjects for whom sufficient plasma was available
Antigen | Type of test | Manufacturer (no. of patients tested) | Positive cases | % Positivity | Concordance between tests |
|---|---|---|---|---|---|
Dengue NS1 (n = 293) | RDT | J. Mitra (n = 290) | 39 | 13.4 | NS1 RDT: J. Mitra vs. SD Bioline: 100% same results, n = 101 |
SD Bioline (n = 101) | 13 | 12.9 | |||
ELISA | Panbio (n = 288) | 41 | 14.2 | J. Mitra RDT vs. Panbio ELISA (NS1): McNemar test, n = 285, exact p-value 0.688 | |
Dengue IgM (n = 293) | RDT | J. Mitra (n = 290) | 16 | 5.5 | IgM RDT: J. Mitra vs. SD Bioline: McNemar test, N = 101, exact p-value 0.625 |
SD Bioline (n = 101) | 1 | 1 | |||
ELISA | Panbio (n = 288) | 35 | 12.2 | J. Mitra RDT vs. Panbio ELISA (NS1): McNemar test, n = 285, exact p-value 0.688 | |
Dengue IgG (n = 290) | RDT | J. Mitra (n = 290) | 8 | 2.8 | IgG RDT: J. Mitra vs. SD Bioline: 100% same results, n = 101 |
SD Bioline (n = 101) | 2 | 2 | |||
Dengue NS1 or Dengue IgG or Dengue IgM | RDT or ELISA | J. Mitra or SD Bioline or Panbio (n = 293) | 74 | 25.3 | Not applicable |
chikungunya IgM (n = 293) | RDT | J. Mitra (n = 288) | 8 | 2.8 | IgM RDT: J. Mitra vs. SD Bioline: McNemar test, n = 100, exact p-value 0.250 |
SD Bioline (n = 102) | 0 | 0 | |||
ELISA | Panbio (n = 288) | 15 | 5.2 | J. Mitra RDT vs. Panbio IgM ELISA: McNemar test, n = 283, exact p-value 0.022 | |
RDT or ELISA | J. Mitra or SD Bioline or Panbio (n = 293) | 17 | 5.8 | Not applicable |