EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Rainfall and epizootic Rift Valley fever






Bulletin of the World Health Organization 63(5): 941-943

Rainfall and epizootic Rift Valley fever

Epizootic Rift Valley fever (RVF) has occurred in Kenya four times over the last 30 years. Widespread, frequent, and persistant rainfall has been a feature of these epizootic periods. A composite statistic, based upon measurements of these rainfall characteristics, is positive during periods of epizootic Rift Valley fever. The heavy rainfall raises the level of the water table in certain areas, flooding the grassland depression (dambos) that are the habitat of the immature forms of certain ground-pool-breeding mosquitoes of the genus Aedes. RVF virus is probably transmitted transovarially in these species, very large numbers of which emerge under these damp conditions. This is when clinical signs of the disease are first seen.


Accession: 006255530

PMID: 3879206



Related references

Meegan, J.M., 1979: The Rift Valley fever epizootic in Egypt 1977-78. 1. Description of the epizootic and virological studies. An extensive epizootic occurred in Egypt from October to December 1977, resulting in abortions and increased mortality in domestic animals and severe clinical disease with fatalities in man. Rift Valley fever (RVF) virus (which is transmitted by m...

Meegan, J.M.; Hoogstraal, H.; Moussa, M.I., 1979: An epizootic of Rift Valley fever in Egypt in 1977. The disease caused increased mortality and abortion in domestic animals during a 1977 epidemic in Egypt, which included extensive human involvement (reflected clinically as either an acute febrile, ocular, encephalitic, or fatal haemorrhagic form)...

Abd el-Rahim, I.H.; Abd el-Hakim, U.; Hussein, M., 1999: An epizootic of Rift Valley fever in Egypt in 1997. An epizootic of Rift Valley fever (RVF) occurred in Egypt between April and August 1997. The signs among infected cattle and sheep were high fever, icterus, bloody diarrhoea and abortion. Aborted sheep fetuses and sera from the affected herds were...

Hussein, N.A.; Chizyuka, R.Z.; Ksiazek, T.G.; Scott, R.M.; Boulos, B.A., 1987: Epizootic of Rift Valley fever in Zambia, 1985. An outbreak of Rift Valley fever in Zambia which lasted from January to May 1985 caused abortion in cattle and sheep and sickness in newborn lambs. Of 19 sheep serum samples tested by haemagglutination inhibition, 14 were positive. In a survey of...

Morvan J.; Rollin P.E.; Laventure S.; Rakotoarivony I.; Coudrier D.; Roux J., 1991: Rift valley fever epizootic in the central highlands of madagascar. American Journal of Tropical Medicine & Hygiene 45(3 SUPPL): 149

Morvan, J.; Rollin, P.E.; Laventure, S.; Rakotoarivony, I.; Roux, J., 1992: Rift Valley fever epizootic in the central highlands of Madagascar. Between February and April 1991, unusual numbers of bovine abortion around Antananarivo (central highlands, Madagascar) were reported by official veterinary services. Rift Valley fever (RVF) virus isolations were made from sixteen aborted foetuses...

Dungu, B.; Donadeu, M.; Bouloy, M., 2013: Vaccination for the control of Rift Valley fever in enzootic and epizootic situations. Vaccination continues to be the most effective way to control Rift Valley fever (RVF), a zoonotic insect-borne viral disease of livestock. The irregular, cyclical and persistent nature of RVF in its occurrence in enzootic situations suggests that...

Hoogstraal, H.; Meegan, J.M.; Khalil, G.M.; Adham, F.K., 1979: The Rift Valley fever epizootic in Egypt in 1977-78. 2. Ecological and entomological studies. Epidemiological factors related to the introduction, spread and maintenance of Rift Valley fever (RVF) virus were studied during the 1977-78 epizootic in Egypt [see preceding abstract]. Culex pipiens L. was the most ubiquitous and prevalent mosqui...

Hoogstraal, H.; Meegan, J.M.; Khalil, G.M.; Adham, F.K., 1979: The Rift Valley fever epizootic in Egypt 1977-78. 2. Ecological and entomological studies. Epidemiological factors related to the introduction, spread and maintenance of Rift Valley fever (RVF) virus were studied during the 1977-78 epizootic in Egypt, Culex pipiens is the most ubiquitous and prevalent mosquito species in the Nile Valley...

Meegan, J.; Watten, R.; Laughlin, L., 1981: Clinical experience with Rift Valley fever in humans during the 1977 Egyptian epizootic. Proceedings Rift Valley fever a workshop: ub 1981) 114-123