Felix Gilberto E, Barrera Roberto, Vazquez Jesus, Ryff Kyle R, Munoz-Jordan Jorge L, Matias Katia Y, Hemme Ryan R
Centers for Disease Control and Prevention, Dengue Branch, San Juan, PR 00921-3200.
J Am Mosq Control Assoc. 2018 Sep;34(3):233-236. doi: 10.2987/18-6741.1.
The exotic arboviruses chikungunya (CHIKV) and Zika (ZIKV) recently caused large outbreaks and continue to circulate in Puerto Rico, prompting entomological investigations at 9 locations with confirmed CHIKV- or ZIKV-infected human cases. Adult mosquitoes were collected using the Centers for Disease Control and Prevention autocidal gravid ovitraps over a 14-day period at each site. Mean female captured per trap-week ranged from 13.47 per trap-week to 1.27 per trap-week. Arbovirus-positive pools were detected at 7 of the 9 sampling sites. We investigated vertical transmission by collecting eggs in a single location where ZIKV was found in adult mosquitoes. We discuss the relationship between vector density and infection rates and its implications for determining mosquito density thresholds of novel invasive arboviruses such as CHIKV and ZIKV.
外来虫媒病毒基孔肯雅病毒（CHIKV）和寨卡病毒（ZIKV）最近在波多黎各引发了大规模疫情，并且仍在传播，这促使人们在9个有确诊CHIKV或ZIKV感染人类病例的地点开展了昆虫学调查。在每个地点，使用美国疾病控制与预防中心的自动杀蚊孕卵诱捕器在14天内收集成年蚊子。每个诱捕器每周捕获的雌蚊平均数从每个诱捕器每周13.47只到每个诱捕器每周1.27只不等。在9个采样地点中的7个检测到了虫媒病毒阳性样本。我们通过在一个发现成年蚊子感染ZIKV的地点收集蚊卵来研究垂直传播。我们讨论了媒介密度与感染率之间的关系及其对确定新型入侵虫媒病毒（如CHIKV和ZIKV）的蚊子密度阈值的影响。
