<prompt> Culture media for peussis is -L-J mediumChocolate mediaWilson blair mediumBordet - Gengou medium  <response>: Ans. is d i.e., Bordet-Gengou medium B. peussis .Morphology - Gram negative - Coccobacillus - Capsulated - Non-motile - Bipolar metachromatic granules are present. . Culture - Strict aerobe - Bordet-Gengou glycerine potato-blood agar medium is commonly used. - Incorporation of diamidine fluoride and penicillin Laceys DFP medium makes it more selective. - Transpo media a Modified stuas medium b Mischulows charcol agar - Produces bisected pearls or mercury drops colones. - Confluent growth present and aluminium paint appearance. . Pathogenicity B. peussis causes peussis or whooping cough. . Laboratory diagnosis - Specimen The best specimen is collected by nasopharyngeal aspiration. - Culture Culture of nasopharyngeal secretions remains the gold standard of diagnosis. . Treatment DOC Macrolide Erythromycin, Azithromycin, Clarithromycin Alternative --111- Cotrimoxazole 