干旱区生态环境知识资源中心(Arid): Anopheles arabiensis hotspots along intermittent rivers drive malaria dynamics in semi-arid areas of Central Ethiopia

Arid

DOI	10.1186/s12936-021-03697-z
	Anopheles arabiensis hotspots along intermittent rivers drive malaria dynamics in semi-arid areas of Central Ethiopia
	Eba, Kasahun; Habtewold, Tibebu; Yewhalaw, Delenasaw; Christophides, George K.; Duchateau, Luc
通讯作者	Duchateau, L (corresponding author), Univ Ghent, Fac Vet Med, Biometr Res Ctr, Merelbeke, Belgium.
来源期刊	MALARIA JOURNAL
EISSN	1475-2875
出版年	2021
卷号	20 期号:1
英文摘要	BackgroundUnderstanding malaria vector's population dynamics and their spatial distribution is important to define when and where the largest infection risks occur and implement appropriate control strategies. In this study, the seasonal spatio-temporal dynamics of the malaria vector population and transmission intensity along intermittent rivers in a semi-arid area of central Ethiopia were investigated.MethodsMosquitoes were collected monthly from five clusters, 2 close to a river and 3 away from a river, using pyrethrum spray catches from November 2014 to July 2016. Mosquito abundance was analysed by the mixed Poisson regression model. The human blood index and sporozoite rate was compared between seasons by a logistic regression model.ResultsA total of 2784 adult female Anopheles gambiae sensu lato (s.l.) were collected during the data collection period. All tested mosquitoes (n=696) were identified as Anopheles arabiensis by polymerase chain reaction. The average daily household count was significantly higher (P=0.037) in the clusters close to the river at 5.35 (95% CI 2.41-11.85) compared to the clusters away from the river at 0.033 (95% CI 0.02-0.05). Comparing the effect of vicinity of the river by season, a significant effect of closeness to the river was found during the dry season (P=0.027) and transition from dry to wet season (P=0.032). Overall, An. arabiensis had higher bovine blood index (62.8%) as compared to human blood index (23.8%), ovine blood index (9.2%) and canine blood index (0.1%). The overall sporozoite rate was 3.9% and 0% for clusters close to and away from the river, respectively. The overall Plasmodium falciparum and Plasmodium vivax entomologic inoculation rates for An. arabiensis in clusters close to the river were 0.8 and 2.2 infective bites per person/year, respectively.ConclusionMosquito abundance and malaria transmission intensity in clusters close to the river were higher which could be attributed to the riverine breeding sites. Thus, vector control interventions including targeted larval source management should be implemented to reduce the risk of malaria infection in the area.
英文关键词	Clusters Ethiopia Intermittent rivers Malaria Seasonal dynamics Transmission intensity
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000630369900005
WOS类目	Infectious Diseases ; Parasitology ; Tropical Medicine
WOS研究方向	Infectious Diseases ; Parasitology ; Tropical Medicine
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351109
作者单位	[Eba, Kasahun; Duchateau, Luc] Univ Ghent, Fac Vet Med, Biometr Res Ctr, Merelbeke, Belgium; [Eba, Kasahun] Jimma Univ, Dept Environm Hlth Sci & Technol, POB 378, Jimma, Ethiopia; [Habtewold, Tibebu; Christophides, George K.] Imperial Coll London, Dept Life Sci, London, England; [Yewhalaw, Delenasaw] Jimma Univ, Sch Med Lab Sci, POB 378, Jimma, Ethiopia; [Yewhalaw, Delenasaw] Jimma Univ, Trop & Infect Dis Res Ctr, POB 378, Jimma, Ethiopia
推荐引用方式 GB/T 7714	Eba, Kasahun,Habtewold, Tibebu,Yewhalaw, Delenasaw,et al. Anopheles arabiensis hotspots along intermittent rivers drive malaria dynamics in semi-arid areas of Central Ethiopia[J],2021,20(1).
APA	Eba, Kasahun,Habtewold, Tibebu,Yewhalaw, Delenasaw,Christophides, George K.,&Duchateau, Luc.(2021).Anopheles arabiensis hotspots along intermittent rivers drive malaria dynamics in semi-arid areas of Central Ethiopia.MALARIA JOURNAL,20(1).
MLA	Eba, Kasahun,et al."Anopheles arabiensis hotspots along intermittent rivers drive malaria dynamics in semi-arid areas of Central Ethiopia".MALARIA JOURNAL 20.1(2021).