Abstract
Sir, I read the recent publication on vaccine-associated paralytic poliomyelitis (VAPP) with great interest. Ferraz-Filho et al. [1] concluded that “We would like to emphasize the importance of considering VAPP as a differential diagnosis in patients with acute flaccid paralysis and an MRI showing involvement of medulla oblongata or spinal cord, particularly in countries where OPV is extensively administered.” I agree that VAPP must be a differential diagnosis in patients with acute flaccid paralysis; however, there is still a question on the proposed MR finding. The proposed finding seems to be nonspecific. This single case report needs to be confirmed by others.
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