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Death in the sun

机译：阳光下的死亡

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Mexico declared a state of emergency last week after confirmation that West Nile virus has reached the country. Doctors and scientists fear that the impact there and in other countries further south could be far worse than it has been in the US and Canada. The virus is spread by mosquitoes and birds, which could make Latin American countries ideal breeding grounds, because of their warmer climate, large bird populations and year-round mosquitoes. Millions of Mexico's poorest people who use horses as pack animals could be hard hit if the animals are stricken by West Nile. And people who become infected with the virus could fare worse than their counterparts in the US and Canada as exposure to other viruses common in the region may have left them at increased risk of disease. Ecologists are worried about the effect on the diverse animal and bird life in the tropics.
机译：墨西哥在确认西尼罗河病毒已经到达该国之后，于上周宣布进入紧急状态。医生和科学家担心那里的影响以及在更南部的其他国家的影响可能会比美国和加拿大严重得多。该病毒通过蚊子和鸟类传播，这使拉丁美洲国家成为理想的繁殖地，因为它们的气候变暖，鸟类数量众多并且全年都有蚊子。如果西尼罗河遭受牲畜袭击，那么数以百万计的墨西哥最贫困人口将马作为牲畜可能会遭受重创。而且，被该病毒感染的人的情况可能会比美国和加拿大的情况更糟，因为接触该地区其他常见病毒可能会使他们患病的风险增加。生态学家担心对热带地区各种动物和鸟类生命的影响。

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