A trader, who was bitten by a snake, died due to alleged negligence by physicians in Lalpur upazila of Natore on Thursday night, his family said.
Mahbub, 27, was a resident of Ramandapur village under the upazila and had a small business at a local bazar.
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Family members said a poisonous snake bit him while he was washing face at a tube well in his yard around 8:30pm.
He was rushed to Upazila Health Complex where physicians found no traces of poison after testing his blood, they said.
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Later, the physicians opened the rope tied on the leg of the youth. At one stage the patient started vomiting and his condition worsened, leading to death, they said.
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Sohel Rana, a physician of the hospital, said the patient might have died from cardiac arrest following shock from the incident. But no traces of poison was found in his blood.