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Rift Valley Fever (RVF) is a vector borne disease that infects people. Most cases are mild, but a sometimes it causes high fevers, seizures, and brain swelling. RVF epidemics have occurred at 5-10 yr intervals in drier areas of eastern Africa, and less frequently in southern Africa. Outbreaks are usually associated with periods of abnormally heavy rainfall or flooding. Between epidemics, the virus that causes Rift Valley Fever may remain dormant in eggs of mosquitoes. Cycling of the virus between mosquitoes and wild or domestic mammals has been shown to occur in many areas. When emergence of infected mosquitoes, or introduction of virus to an area, coincides with abnormally wet conditions and the presence of a highly susceptible host population, a large epidemic may ensue when the virus is amplified in mammals and spread locally by many species of mosquitoes. The incidence of RVF peaks during the late rainy season. In areas with cold winters, both the disease disappears after the first frost. In warmer climates, seasonality is not seen. What is the reservoir host for RVF?

Rift Valley Fever (RVF) is a vector borne disease that infects people. Most cases are mild, but a sometimes it causes high fevers, seizures, and brain swelling. RVF epidemics have occurred at 5-10 yr intervals in drier areas of eastern Africa, and less frequently in southern Africa. Outbreaks are usually associated with periods of abnormally heavy rainfall or flooding. Between epidemics, the virus that causes Rift Valley Fever may remain dormant in eggs of mosquitoes. Cycling of the virus between mosquitoes and wild or domestic mammals has been shown to occur in many areas. When emergence of infected mosquitoes, or introduction of virus to an area, coincides with abnormally wet conditions and the presence of a highly susceptible host population, a large epidemic may ensue when the virus is amplified in mammals and spread locally by many species of mosquitoes. The incidence of RVF peaks during the late rainy season. In areas with cold winters, both the disease disappears after the first frost. In warmer climates, seasonality is not seen. What is the reservoir host for RVF?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Rift Valley Fever (RVF) is a vector borne disease that infects people. Most cases are mild, but a sometimes it causes high fevers, seizures, and brain swelling. RVF epidemics have occurred at 5-10 yr intervals in drier areas of eastern Africa, and less frequently in southern Africa. Outbreaks are usually associated with periods of abnormally heavy rainfall or flooding. Between epidemics, the virus that causes Rift Valley Fever may remain dormant in eggs of mosquitoes. Cycling of the virus between mosquitoes and wild or domestic mammals has been shown to occur in many areas. VWhen emergence of infected mosquitoes, or introduction of virus to an area, coincides with abnormally wet conditions and the presence of a highly susceptible host population, a large epidemic may ensue when the virus is amplified in mammals and spread locally by many species of mosquitoes. The incidence of RVF peaks during the late rainy season. In areas with cold winters, both the disease disappears after the first frost. In warmer climates, seasonality is not seen. What is the reservoir host for RVF?
Transcribed Image Text:Rift Valley Fever (RVF) is a vector borne disease that infects people. Most cases are mild, but a sometimes it causes high fevers, seizures, and brain swelling. RVF epidemics have occurred at 5-10 yr intervals in drier areas of eastern Africa, and less frequently in southern Africa. Outbreaks are usually associated with periods of abnormally heavy rainfall or flooding. Between epidemics, the virus that causes Rift Valley Fever may remain dormant in eggs of mosquitoes. Cycling of the virus between mosquitoes and wild or domestic mammals has been shown to occur in many areas. VWhen emergence of infected mosquitoes, or introduction of virus to an area, coincides with abnormally wet conditions and the presence of a highly susceptible host population, a large epidemic may ensue when the virus is amplified in mammals and spread locally by many species of mosquitoes. The incidence of RVF peaks during the late rainy season. In areas with cold winters, both the disease disappears after the first frost. In warmer climates, seasonality is not seen. What is the reservoir host for RVF?
O humans mosquitoes O wild and domestic mammals O water (from rain or flooding) the virus itself
Transcribed Image Text:O humans mosquitoes O wild and domestic mammals O water (from rain or flooding) the virus itself
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