Ray, MAgarwal, K CChitkara, N L1973-05-012009-05-271973-05-012009-05-271973-05-01Ray M, Agarwal KC, Chitkara NL. Bordetella pertussis infection in Chandigarh. Indian Journal of Medical Research. 1973 May; 61(5): 645-8http://imsear.searo.who.int/handle/123456789/21222engAge FactorsBordetella pertussis --isolation & purificationChild, PreschoolCulture MediaFemaleHumansIndiaInfantMaleSerotypingWhooping Cough --epidemiologyJournal Article