any agent (person or animal or microorganism) that carries and transmits a disease; "mosquitos are vectors of malaria and yellow fever"; "fleas are vectors of the plague"; "aphids are transmitters of plant diseases"; "when medical scientists talk about vectors they are usually talking about insects" 病を運び感染させるいかなる媒体（人、動物、微生物）。
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【上位】 an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents" 活性化した有効な原因。特定の影響を生じることができる。
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【下位】 (medicine) a person (or animal) who has some pathogen to which he is immune but who can pass it on to others 病原体を持っていて、自分は発病しないが、他人に病原体を運ぶ人。
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【上位】 any electronic equipment that receives or transmits radio or tv signals; "the early sets ran on storage batteries" ラジオヤテレビの信号を受信したり放送したりする電子機器。
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