However, this mosquito species has re-colonized urban areas in the region and poses a renewed risk of urbanyellowfever.
然而,随着这一类蚊虫在该地区再次出现,城市型黄热病有可能死灰复燃。
2
Urbanyellowfever: Large epidemics occur when infected people introduce the virus into densely populated areas with a high number of non-immune people and Aedes mosquitoes.