Difference between revisions of "Cowdriosis"
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| + | {{Taxobox | ||
| + | |name = ''Cowdria ruminantium'' | ||
| + | |kingdom = Bacteria | ||
| + | |sub-kingdom = | ||
| + | |phylum = Proteobacteria | ||
| + | |super-class = | ||
| + | |class = Alphaproteobacteria | ||
| + | |sub-class = | ||
| + | |super-order = | ||
| + | |order = Rickettsiales | ||
| + | |sub-order = | ||
| + | |super-family = | ||
| + | |family = Ehrlichiaceae | ||
| + | |sub-family = | ||
| + | |genus = Cowdria | ||
| + | |species = ''C. ruminantium'' | ||
| + | }} | ||
| + | |||
| + | |||
===Heartwater=== | ===Heartwater=== | ||
Revision as of 11:38, 7 June 2011
| Cowdria ruminantium | |
|---|---|
| Kingdom | Bacteria |
| Phylum | Proteobacteria |
| Class | Alphaproteobacteria |
| Order | Rickettsiales |
| Family | Ehrlichiaceae |
| Genus | Cowdria |
| Species | C. ruminantium |
Heartwater
- Severe disease of ruminants in sub-Saharan Africa caused by Cowdria ruminantium
- Vectors include Amblyomma ticks
- Carrier status can occur for up to 8 months in adult cattle and wildebeest
- Clinical disease in calves and lambs
- Clinical signs
- Incubation period 4 weeks
- Acute fever
- Neurological signs including chewing, twitching of eyelids, circling, high-stepping gait, convulsions and recumbency; can be fatal
- Subacute cases suffer from hydropericardium, hydrothorax and pulmonary oedema and congestion; splenomegaly and haemorrhages may occur
- Diagnosis
- Clinical and post mortem findings in endemic areas suggestive
- Orgnisms present in nuclei of endothelial cells in Giemsa-stained brain tissue
- PCR, indirect immunofluorescence, ELISA and western blot
- Treatment and control
- Tetracyclines during early disease
- Immunisation using infected blood