Faculty Opinions recommendation of Spectrum of Rift Valley fever virus transmission in Kenya: insights from three distinct regions.

2007 ◽  
Author(s):  
Tomas Jelinek
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Fever Virus ◽  
Valley Fever

Rift Valley fever virus transmission by different Egyptian mosquito species

1987 ◽  
Vol 81 (4) ◽  
pp. 694-698 ◽  
Author(s):  
Adel M. Gad ◽  
Mosaad M. Hassan ◽  
Sharif El Said ◽  
Mahmoud I. Moussa ◽  
Owen L. Wood
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Mosquito Species ◽  
Virus Transmission ◽  
Fever Virus ◽  
Valley Fever

scholarly journals Co-housing of Rift Valley Fever Virus Infected Lambs with Immunocompetent or Immunosuppressed Lambs Does Not Result in Virus Transmission

2016 ◽  
Vol 7 ◽  
Author(s):  
Paul J. Wichgers Schreur ◽  
Lucien van Keulen ◽  
Jet Kant ◽  
Nadia Oreshkova ◽  
Rob J. M. Moormann ◽  
...  
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Fever Virus ◽  
Valley Fever

scholarly journals Threshold Dynamics in a Periodic Three-Patch Rift Valley Fever Virus Transmission Model

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Buyu Wen ◽  
Zhidong Teng ◽  
Wenlin Liu
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Operator Method ◽  
Fever Virus ◽  
Transmission Model ◽  
Threshold Dynamics ◽  
Valley Fever ◽  
Threshold Conditions

This paper investigates a three-patch Rift Valley fever virus transmission model with periodic coefficients. The basic reproduction number Ri0i=1,2,3 is calculated for the model by using the next infection operator method. The threshold conditions on the extinction and permanence in the mean of the disease with probability one. The Rift Valley fever disease will be permanent in the j-th j=1,2,3 patch if j≥i,Ri0>1 and dies out in the j-th patch if j<i. The numerical simulations are given to confirm the theoretical results.

scholarly journals Postepidemic Analysis of Rift Valley Fever Virus Transmission in Northeastern Kenya: A Village Cohort Study

2011 ◽  
Vol 5 (8) ◽  
pp. e1265 ◽  
Author(s):  
A. Desirée LaBeaud ◽  
Samuel Muiruri ◽  
Laura J. Sutherland ◽  
Saidi Dahir ◽  
Ginny Gildengorin ◽  
...  
Keyword(s):  
Cohort Study ◽  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Fever Virus ◽  
Valley Fever

Arbovirus Surveillance of Mosquitoes Collected at Sites of Active Rift Valley Fever Virus Transmission: Kenya, 2006–2007

2009 ◽  
Vol 46 (4) ◽  
pp. 961-964 ◽  
Author(s):  
Mary Crabtree ◽  
Rosemary Sang ◽  
Joel Lutomiah ◽  
Jason Richardson ◽  
Barry Miller
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Fever Virus ◽  
Valley Fever ◽  
Arbovirus Surveillance

scholarly journals Detection of Rift Valley Fever Virus Interepidemic Activity in Some Hotspot Areas of Kenya by Sentinel Animal Surveillance, 2009–2012

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Jacqueline Kasiiti Lichoti ◽  
Absolomon Kihara ◽  
Abuu A. Oriko ◽  
Leonard Ateya Okutoyi ◽  
James Ogaa Wauna ◽  
...  
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Control Strategies ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Small Ruminants ◽  
Fever Virus ◽  
Eastern Africa ◽  
Mosquito Vector ◽  
Valley Fever

Rift Valley fever virus causes an important zoonotic disease of humans and small ruminants in Eastern Africa and is spread primarily by a mosquito vector. In this region, it occurs as epizootics that typically occur at 5–15-year intervals associated with unusual rainfall events. It has hitherto been known that the virus is maintained between outbreaks in dormant eggs of the mosquito vector and this has formed the basis of understanding of the epidemiology and control strategies of the disease. We show here that seroconversion and sporadic acute disease do occur during the interepidemic periods (IEPs) in the absence of reported cases in livestock or humans. The finding indicates that previously undetected low-level virus transmission during the IEPs does occur and that epizootics may also be due to periodic expansion of mosquito vectors in the presence of both circulating virus and naïve animals.

scholarly journals The influence of raw milk exposures on Rift Valley fever virus transmission

2019 ◽  
Vol 13 (3) ◽  
pp. e0007258 ◽  
Author(s):  
Elysse N. Grossi-Soyster ◽  
Justin Lee ◽  
Charles H. King ◽  
A. Desiree LaBeaud
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Raw Milk ◽  
Fever Virus ◽  
Valley Fever

scholarly journals Feeding behavior of Aedes (Aedimorphus) vexans arabiensis, a Rift valley fever virus vector in the Ferlo pastoral ecosystem of Senegal

2019 ◽  
Author(s):  
Biram Biteye ◽  
Assane Gueye Fall ◽  
Momar Talla Seck ◽  
Mamadou Ciss ◽  
Mariame Diop ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Blood Meal ◽  
Rift Valley ◽  
Rift Valley Fever ◽  
Rift Valley Fever Virus ◽  
Virus Transmission ◽  
Fever Virus ◽  
Host Feeding ◽  
Aedes Vexans ◽  
Valley Fever

AbstractHost-vector contact is a key factor in vectorial capacity assessment and thus the transmission of mosquito-borne viruses such as Rift Valley Fever (RVF), an emerging zoonotic disease of interest in West Africa. The knowledge of the host-feeding patterns of vector species constitutes a key element in the assessment of their epidemiological importance in a given environment. The aim of this work was to identify the blood meal origins of Aedes vexans arabiensis Patton (Diptera: Culicidae), the main vector of RVF virus in the Ferlo pastoral ecosystem of Senegal. Engorged female mosquitoes were collected in Younouféré in the pastoral ecosystem in the Ferlo region during the 2014 rainy season. CDC light CO2-baited traps were set at six sites for two consecutive nights every month from July to November. Domestic animals present around traps were identified and counted for each trapping session. Blood meal sources of engorged mosquitoes were identified using a vertebrate-specific multiplexed primer set based on cytochrome b. Blood meal sources were successfully identified for 319 out of 416 blood-fed females (76.68%), of which 163 (51.1%) were single meals, 146 (45.77%) mixed meals from two different hosts and 10 (3.13%) mixed meals from three different hosts. Aedes vexans arabiensis fed preferentially on mammals especially on horse compared to other hosts (P < 0.001). Proportions of single and mixed meals showed significant temporal (P < 0.001) and spatial variations (P < 0.001) according to hosts availability. Aedes vexans arabiensis shows an opportunistic feeding behavior depending on the host availability. Results were discussed in relation with the Rift valley fever virus transmission and vector involvement as well as its primary hosts.

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