PF4 and Guillain-Barre syndrome: Among non-survivors in the ≤35years of age group and admitted within 42 days of vaccination, the admission diagnoses were intracranial bleeding, liver failure, fever with demyelinating polyradiculopathy (atypical GBS) with brainstem involvement, and tropical fever with thrombocytopenia (platelet factor 4 (PF4) antibodies were negative and the patient had brainstem dysfunction).