Active monitoring and surveillance of the natural mosquito population should accompany control efforts to determine programme effectiveness.
积极监测蚊子自然数量应是控制工作的一部分，以了解活动的有效性。
2
Mosquitocontrol programmes targeting wild mosquitoes in forested areas are not practical for preventing jungle (or sylvatic) yellow fever transmission.
在预防丛林型(或森林型)黄热病传播方面，以林区中野外蚊虫为目标的蚊虫控制规划缺乏可操作性。
3
Mosquitocontrol is being strengthened in many areas, but there are significant challenges, including.