1临床资料患者,男性,汉族,2001年5月20日出生。2009年12月28日上午在学校接种1剂甲型H1N1流感疫苗。2010年1月13日出现无明显诱因的双上肢及双手无力症状,表现为双上肢可抬起,但系扣、写字、持筷等精细动作笨拙。随后5d内病情进行性加重,从上肢无力发展到下肢无力,表现为四肢远端肌无力。患者于2010年1月18日以“进行性四肢无力5d”住院。入院时生命体征及体格检查均正常,意识清醒,精神 1 Clinical data Patients, male, Han nationality, born May 20, 2001. On the morning of December 28, 2009, a class A H1N1 influenza vaccine was given to schools. January 13, 2010 there is no obvious incentive for both upper extremities and both hands weakness, manifested as double upper extremities can be lifted, but the buckle, writing, chopsticks and other fine movements clumsy. Subsequent progressive disease within 5d, weakness from the development of upper limb weakness, manifested as distal limb weakness. Patients on January 18, 2010 to “progressive limb weakness 5d ” hospitalization. Physical signs and physical examination on admission were normal, conscious, spirit