Differentiation of Haemophilus spp. in Respiratory isolate cultures by an indole spot test.

AUTOR(ES)

Welch, D F

RESUMO

Indole spot tests using isolated, nonhemolytic colonies of Haemophilus species were positive for 90 of 151 (60%) respiratory isolates of Haemophilus influenzae, whereas 67 to 72 (93%) isolates of H. influenzae from cerebrospinal fluid and blood specimens were indole positive. Only 4 of 117 (3%) Haemophilus parainfluenzae isolates were positive for indole spot tests. Thus, indole-positive, nonhemolytic Haemophilus isolates in respiratory cultures can be presumptively identified as H. influenzae.

Documentos Relacionados

• Development of a test system for rapid differentiation of Neisseria and Haemophilus spp.
• Evaluation of the An-Ident system and an indole spot test for the rapid differentiation of porcine treponemes.
• Serological cross-reaction between Legionella spp. and Capnocytophaga ochracea by using latex agglutination test.
• Evaluation of a xylene substitute in Ehrlich indole test.
• Spot indole test: evaluation of four reagents.