The 2 episodes described by you here are suggestive of seizures. If these are first episodes experienced by your husband he will need detailed workup including an EEG and MRI
of Brain as to ascertain the cause of seizures. Your doctor is also likely to start him on antiepileptic medication to prevent future episodes as the likelyhood of recurrence is higher as he already had 2 episodes of seizures.
Some of the cause of seizures include Infection in the brain, Tumors in the brain, Congenital malformations, Metabolic derangements like Hypoglycemia
etc. It is difficult to link the present episodes to his previous meningitis
Hope this helps.