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)
vector
(genetics) a virus or other agent that is used to deliver DNA to a cell