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Madeira, Portugal 2

Dengue Outbreak Strikes European Outpost
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An outbreak of dengue fever on the Portuguese island of Madeira, some 700 kilo meters west of Morocco, has sickened more than 1300 people since 3 October. Dengue¡ªwhich does not usually kill but causes crippling muscle and joint pains¡ªoccurs in many tropical and subtropical countries, but Europe has not seen sustained transmission since the 1920s, the European Centre for Disease Prevention and Control in Stockholm said last week. No deaths have been recorded, but 89 patients had to be hospitalized.

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The dengue virus can be transmitted by several mosquito species; Aedes aegypti, the most effective vector, invaded Madeira in 2004 and has been spreading since, says Francis Schaffner, a parasitologist at the University of Zurich in Switzerland. Authorities initially tried to control the insects, ¡°but it didn¡¯t work and they stopped,¡± he says. A. aegypti does not occur in mainland Europe, but its cousin, A. albopictus¡ªbetter known as the Asian tiger mosquito¡ªis established in most Mediterranean countries and could act as a vector, albeit a weaker one, in the summer, Schaffner warns.

Francis SchaffnerÊÇÈðÊ¿ËÕÀèÊÀ´óѧµÄÒ»Ãû¼ÄÉúÉúÎïѧ¼Ò£¬Ëû˵µÇ¸ïÈȲ¡¶¾¿ÉÒÔͨ¹ýÎÃ×Ó´«²¥£¬ÆäÖÐ Aedes aegyptiÎÃ×ÓÊÇ×îÓÐЧµÄ´«²¥Ã½½é¡£ÕâÖÖÎÃ×Ó2004ÄêÈëÇÖÂíµÂÀ­µº£¬²¢¿ªÊ¼´«²¥µÇ¸ïÈȲ¡¶¾¡£Õþ¸®¿ªÊ¼ÔøÊÔͼ¿ØÖÆÎÃ×Ó£¬¡°µ«ÊDz¢Î´×àЧȻºó¾ÍÍ£Ö¹ÁË¡±¡£Schaffner½øÒ»²½¾¯¸æËµ£¬A. aegyptiÎÃ×Ó²¢Ã»ÓгöÏÖÔÚÔÚÅ·Ö޴󽣬µ«ÊÇËüµÄ½üÇ×A. albopictus£¬Ò²½Ð×öÑÇÖÞÀÏ»¢ÎÃ×Ó£¬ÒѾ­Ôڴ󲿷ֵĵØÖк£¹ú¼Ò°²ÓªÔúÕ¯¡£ËäÈ»ÕâÖÖÎÃ×ӵĴ«²¥Ð§ÂʵÍһЩ£¬µ«ÊǽñÄêÏÄÌìÒÀÈ»¿ÉÄÜ»áÊÇÒ»ÖÖ´«²¥Ã½½é£¨À´´«²¥µÇ¸ïÈȲ¡¶¾£©¡£


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