This is very concerning. Unfortunately i am not quite clear about what happened here. Did the decerebrate posturing happen immediately after your child was given these vaccines and has this posturing continued? It is not clear from your description.These vaccines are not usually given together at one visit.Your child must be fully investigated for the cause of decerebrate posturing incuding having an EEG.It would be best to take him/her to be seen by a paediatric neurologist ASAP.
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