A positive<unk>  diagnosis includes the clinical symptoms (mainly the fever,<unk>  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 meningitidis rules out the possibility of the symptoms being caused by meningitis, since the clinical presentations of the two diseases are similar.
Brazilian purpuric fever
Barcoo fever
Scarlet fever
Murine typhus
Boutonneuse fever
Spondweni fever
Boston exanthem disease
Adult-onset Still's disease