Chinese state run media is reporting that 41 people have been killed in mass hornet attacks since July.

The China News Agency reports more than 1,600 people have been injured by hornet attacks in Shaanxi province. More than 200 are still hospitalized with 37 in critical condition.

Most of the attacks have been attributed to the Asian giant hornet which can grow up to 2 inches long with a stinger ¼ inch long. The hornet’s venom contains a neurotoxin that can lead to renal failure.

Local officials say warmer weather has contributed to a rise in hornet numbers. Environmental activists blame the increase on rapid urbanization intruding into land where hornets build nests and hunt.

Police and firefighters throughout the region have been given special protective gear to remove or destroy hornet nests. Provincial government authorities have brought in Pest control experts.