The type of Diphtheria with highest moality is-
In laryngotracheal diphtheria if infection extends in to bronchial tree , it is the most severe form of disease. Prostration and dyspnoea occurs as a result of obstruction caused by membrane. This may cause suffocation if not treat properly with intubation or tracheostomy Reference : Park&;s Textbook of preventive and social medicine, 24th edition.Pg no171
Pharyngeal
Nasal
Laryngeal
Conjuntival
Communicable diseases