Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district
Background We evaluated the diagnostic accuracy of the Ehrlichia Ruminantium test (Post Mortem vs Direct Brain Smear) to screen for Heartwater in Masvingo District. Methods Between July 2016 and July 2017, cattle and goat carcasses were screened for heartwater (tick abundance, characteristic post...
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| Language: | English |
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Midlands State University
2018
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| Online Access: | http://hdl.handle.net/11408/3421 |
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| author | Zhou, Witness |
| author_facet | Zhou, Witness |
| author_sort | Zhou, Witness |
| collection | DSpace |
| description | Background
We evaluated the diagnostic accuracy of the Ehrlichia Ruminantium test (Post Mortem vs Direct Brain Smear) to screen for Heartwater in Masvingo District.
Methods
Between July 2016 and July 2017, cattle and goat carcasses were screened for heartwater (tick abundance, characteristic post mortem lesions and direct brain smear for microscopy). Sensitivity and specificity and predictive values of E Ruminantium were calculated using microscopy results as our gold standard. Epi info software version 7 was used.
Findings
145 animal carcasses were selected, 101 were positive by post mortem examinations and 44 were negative by post mortem examinations. Samples had to underdo tentative diagnosis by direct brain smear in the lab. Among all the participants, sensitivity was found to be 88% and 82% respectively. Sensitivity and specificity was calculated seperately for cattle and goats, for cattle sensitivity and specificity was 91% and 70.3% respectively for goats sensitivity and specificity was 82% and 72.2% respectively.
Conclusion
The diagnostic tests used have adequate sensitivity for heartwater screening in this population. |
| id | ir-11408-3421 |
| institution | My University |
| language | English |
| publishDate | 2018 |
| publisher | Midlands State University |
| record_format | dspace |
| spelling | ir-11408-34212022-06-27T13:49:05Z Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district Zhou, Witness Diagnostic accuracy Negative predicitive value Positive predictive value Ehrlichia ruminantium Background We evaluated the diagnostic accuracy of the Ehrlichia Ruminantium test (Post Mortem vs Direct Brain Smear) to screen for Heartwater in Masvingo District. Methods Between July 2016 and July 2017, cattle and goat carcasses were screened for heartwater (tick abundance, characteristic post mortem lesions and direct brain smear for microscopy). Sensitivity and specificity and predictive values of E Ruminantium were calculated using microscopy results as our gold standard. Epi info software version 7 was used. Findings 145 animal carcasses were selected, 101 were positive by post mortem examinations and 44 were negative by post mortem examinations. Samples had to underdo tentative diagnosis by direct brain smear in the lab. Among all the participants, sensitivity was found to be 88% and 82% respectively. Sensitivity and specificity was calculated seperately for cattle and goats, for cattle sensitivity and specificity was 91% and 70.3% respectively for goats sensitivity and specificity was 82% and 72.2% respectively. Conclusion The diagnostic tests used have adequate sensitivity for heartwater screening in this population. 2018-12-13T13:45:12Z 2018-12-13T13:45:12Z 2018 http://hdl.handle.net/11408/3421 en open Midlands State University |
| spellingShingle | Diagnostic accuracy Negative predicitive value Positive predictive value Ehrlichia ruminantium Zhou, Witness Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title | Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title_full | Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title_fullStr | Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title_full_unstemmed | Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title_short | Diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in Masvingo district |
| title_sort | diagnostic accuraccy of ehrlichia ruminantium test for heartwater screening in masvingo district |
| topic | Diagnostic accuracy Negative predicitive value Positive predictive value Ehrlichia ruminantium |
| url | http://hdl.handle.net/11408/3421 |
| work_keys_str_mv | AT zhouwitness diagnosticaccuraccyofehrlichiaruminantiumtestforheartwaterscreeninginmasvingodistrict |