oa South African Medical Journal - The value of the differential count in the early diagnosis of whooping-cough

Volume 15, Issue 22
  • ISSN : 0256-9574
  • E-ISSN: 2078-5135



A child who presents the clinical features suggestive of pertussis in the catarrhal stage should have a differential count done at the earliest possible moment. If the lymphocytes number over 55 per cent. A diagnosis of whooping cough may be made with reasonable confidence and a course of pertussis vaccine started without delay.

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