美国最新研究显示,常常感冒、或曾多次接受流感疫苗注射的人,或许对甲型N1N1流感比较有抵抗力。证据显示,人体免疫系统能够认出新型H1N1病毒株中,与旧型、关系较远病毒株的相似部分。加州拉荷亚研究所传染病研究中心主任赛特说:“我们发现新流感和季节性流感有相似之处,这提供 New research in the United States shows that people who often have a cold or who have been receiving flu vaccinations on multiple occasions may be more resistant to Influenza A N1N1. Evidence shows that the human immune system recognizes similar parts of the novel H1N1 strain as the older, more distantly related strains. Dorset, director of the Center for Infectious Diseases Research at the La Jolla Research Institute in California, said: "We found similarities between new and seasonal flu, which provide