美国堪萨斯州卫生部门官员25日确认，该州一对夫妇感染了猪流感，加利福尼亚州当天也新发现一名猪流感患者，这使得美国猪流感患者总数达到11人。世界卫生组织当天发表声明说，美国和墨西哥发生的猪流感疫情已构成“具有国际影响的公共卫生紧急事态”，所有国家都应加强对非正常暴发的流感类疾病和严重肺炎的监控。
美国堪萨斯州卫生和环境部官员贾森·埃伯哈特－菲利普当天表示，染病夫妇生活在该州中部的迪金森县，两人病情较轻，无需住院，他们已经自愿将自己隔离。
据埃伯哈特－菲利普介绍，这对夫妇中的男性上周曾前往墨西哥参加会议，返回后开始生病，其妻随后也染病，经设在亚特兰大的美国疾病控制和预防中心检测，两人被确认感染了猪流感病毒。
墨西哥卫生部官员何塞·科尔多瓦25日也通报说，截至24日晚间，墨西哥共有20人因直接感染猪流感病毒死亡，全国疑似病例达4000余人。 医学教育网搜集整理
世界卫生组织25日警告说，墨西哥和美国发生的猪流感疫情已构成“具有国际影响的公共卫生紧急事态”，所有国家都应加强对非正常暴发的流感类疾病和严重肺炎的监控。然而，世卫组织紧急委员会认为，尚不能确定是否应调整目前的流感大流行“3级警告”水平，这需要收集更多信息才能决定。
WHO declares swine flu outbreak "public health emergency
The World Health Organization (WHO)on Saturday declared the swine flu outbreak in Mexico and the United States a "public health emergency of international concern" and urged countries to be alert.
Based on the advice of a WHO emergency committee, Director-general Margaret Chan "has determined that the current events constitute a public health emergency of international concern," the UN agency said in a statement.
The WHO chief is recommending, on the advice of the committee, that all countries intensify surveillance for unusual outbreaks ofinfluenza-like illness and severe pneumonia, the statement added.
However, more information is needed before a decision could be made concerning the appropriateness of the current "phase 3" alert level of a pandemic risk, according to the advice of the committee, which is composed of international experts in a variety of disciplines.
The WHO's pandemic alert includes altogether six phases. "Phase3" means "no or very limited human-to-human transmission."
The emergency committee was established in compliance with the International Health Regulations (2005). It convened its first meeting on Saturday to assess the swine flu situation and advise the WHO chief on appropriate responses.
After reviewing available data on the current situation, committee members identified a number of gaps in knowledge about the clinical features, epidemiology, and virology of reported cases and the appropriate responses, the WHO statement said.
The committee also noted that answers to several specific questions were needed to facilitate its work.
