Southeastern Cooperative Wildlife Disease Study, Veterinary Medicine, University of Georgia, 589 D.W. Brooks Dr., Athens, GA 30601, USA; Warnell School of Forestry and Natural Resources, University of Georgia, 180 E. Green St., Athens, GA 30602, USA.
Southeastern Cooperative Wildlife Disease Study, Veterinary Medicine, University of Georgia, 589 D.W. Brooks Dr., Athens, GA 30601, USA.
Int J Infect Dis. 2020 Jun;95:216-220. doi: 10.1016/j.ijid.2020.03.016. Epub 2020 Mar 12.
The global Guinea Worm Eradication Program has reduced numbers of human infections of Guinea worm disease (dracunculiasis) to 49 cases in four countries. However, infections of domestic animals (dogs and cats) have recently been recognized and are increasing. Typically, Guinea worm (Dracunculus medinensis) transmission occurs via the ingestion of copepods from water. Despite several interventions, including tethering of dogs while worms emerge, the number of infected dogs continue to increase. One hypothesis is that dogs could be infected through the ingestion of copepods in provisioned water.
The purpose of this study was to determine whether copepods can survive in water containers under typical Chadian temperatures.
Four container types (plastic, glass, gourd, and metal) were seeded with copepods and exposed to simulated Chadian temperatures.
All copepods in the metal containers died within 4 h. Conversely, after 8 h live copepods were still present in plastic, glass, and gourd containers.
If provisioned water is provided to potential hosts of D. medinensis, metal containers create the most inhospitable environment for copepods. Plastic containers have little effect on copepod mortality. The use of metal containers for water provisions could be a useful tool assisting with the interruption of D. medinensis transmission among dogs.
全球麦地那龙线虫根除计划已将人类麦地那龙线虫病（麦地那龙线虫病）的感染人数减少到四个国家的 49 例。然而，最近已认识到并在增加家养动物（狗和猫）的感染。通常，麦地那龙线虫（麦地那龙线虫）通过摄入水中的桡足类传播。尽管采取了包括在蠕虫出现时拴住狗在内的几种干预措施，但感染狗的数量仍在继续增加。一种假设是，狗可能通过摄入配给水中的桡足类而感染。
本研究的目的是确定在乍得典型温度下，桡足类是否能在水容器中存活。
将桡足类种子播种到四种容器类型（塑料、玻璃、葫芦和金属）中，并暴露于模拟乍得温度下。
金属容器中的所有桡足类在 4 小时内全部死亡。相反，在 8 小时后，塑料、玻璃和葫芦容器中仍有活桡足类。
如果向麦地那龙线虫的潜在宿主提供配给水，金属容器会为桡足类创造最不适宜的环境。塑料容器对桡足类死亡率影响不大。金属容器用于供水可能是一种有用的工具，可以帮助中断狗之间麦地那龙线虫的传播。
