Diagnosis
A positive BPF diagnosis includes the clinical symptoms (mainly the fever, purpuric lesions, and rapid progression of the disease), isolation of Haemophilus Influenzae Biogroup aegyptius from blood, and negative laboratory tests for Neisseria meningitidis. The negative tests for Neisseria meningitides rules out the possibility of the symptoms being caused by meningitis, since the clinical presentations of the two diseases are similar.
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