The two children died in the Anugrah Narayan Sinha Medical College-cum-Hospital, its Superintendent Sitaram Prasad said.
A total of 25 children are currently undergoing treatment in the hospital, Prasad said, adding that their blood tests had confirmed the disease.
He said that most of the patients had come from Gaya, Aurangabad and Nawada districts of Bihar and Chatra district of Jharkhand.
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