多方透露美国本土出现首例人感染螺旋蝇蛆病病例

Core Point - The first human case of myiasis caused by screw-worm larvae has been confirmed in Maryland, USA, linked to travel from Guatemala [1] Group 1: Disease Overview - Myiasis is caused by the larvae of the screw-worm fly, which lays eggs in open wounds of warm-blooded animals, including humans [1] - The larvae hatch within hours and feed on living tissue, potentially leading to severe illness or death [1] - Myiasis is devastating to cattle and wildlife, with rare human infections that can also be fatal [1] Group 2: Spread and Impact - Since late last year, myiasis has been spreading from Central America and southern Mexico to the north [1] - The United States has previously suspended imports of live livestock from Mexico due to concerns over the spread of myiasis, including cattle, bison, and horses [1]