Table 3. Serological analysis according to the occurrence of fowl typhoid

Items SPA MA (2n) ELISA
Dead birds
 11) NT NT NT
 2 NT NT NT
 3 NT NT NT
 6 NT NT NT
 10 NT NT NT
 17 NT NT NT
 23 NT NT NT
 25 NT NT NT
 26 NT NT NT
 27 NT NT NT
 29 NT NT NT
 33 NT NT NT
 39 NT NT NT
 40 NT NT NT
Live birds
 4 + 7 1003
 5 - NT NT
 7 + 8 ND
 8 - NT NT
 9 - NT NT
 11 - NT NT
 12 - NT NT
 13 - NT NT
 14 + 10 2298
 15 + 4 ND
 16 - NT NT
 18 - NT NT
 19 - NT NT
 20 + 4 ND
 21 - NT NT
 22 - NT NT
 24 + 3 ND
 28 - NT NT
 30 - NT NT
 31 - NT NT
 32 - NT NT
 34 + 2 ND
 35 - NT NT
 36 - NT NT
 37 - NT NT
 38 - NT NT
Bird’s individual number.
SPA, serum plate agglutination; MA, micro-aggregation; ELISA, enzyme-linked immunosorbent assay; NT, not tested; +, positive; −, negative; ND, not detected.