据美国疾病控制与预防中心报告,堪萨斯州出现了今年美国首例人类感染西尼罗河病毒的病例。中心指出,该病毒1999年首次在西半球国家被发现,并且已经先后在14个国家的鸟类、蚊子或马匹等物种身上被检测出,这意味着该病毒很容易通过蚊子传播给人类。 According to the report of the United States Centers for Disease Control and Prevention, the first human case of West Nile virus infection in the United States occurred in Kansas this year. The center pointed out that the virus was first discovered in Western Hemisphere countries in 1999 and has been detected in birds, mosquitoes or horses in 14 countries. This means that the virus can be easily transmitted to humans through mosquitoes.