Charcoal ceplea lecin blood agar (CCBA) culture The examination of a CCBA culture for berdetela species and the identification of B. pertussis and B. parapertussis.
Collection, Transport and examination of Ear Discharges
S.pyogenes Other beta-haemolytic streptococci
H. influenzae Klebsiella specia
proteus species E.coli and other coliforms Bacteriodes species
Fungi: Aspergillus species especially A. niger, candida species, and occasionally various species of dermatophyte or phycomycete. A fungal infection of the ear is called otomycosis
External Ear infection are more commonly caused by: