Differential diagnostic value of hematological parameters in diphtheria and tonsillitis

Morphological changes in the blood picture in diphtheria, especially in toxic forms, already at the end of the last century attracted the attention of scientists. So, a significant hyperleukocytosis has been described, especially high in cases with a fatal outcome and with an associated secondary infection. Along with this, many authors observed a rapid drop in the number of leukocytes to leukopenic figures before the death of patients (Puenso, Arnet). Also noted are the initial leukopenia in severe forms of diphtheria.