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Porcine eperythrozoonosis in China
Jiansan Wu1, Jianmin Yu, Cuiping Song
1National Exotic Animal Disease Center, National Animal Quarantine Institute, Ministry of Agriculture, 266032, Qingdao, P.R. China. wujians@public.qd.sd.cn
Annals of the New York Academy of Sciences
|December 1, 2006
Summary
Eperythrozoonosis, a significant swine disease in China, causes severe ictero-anemia and economic losses. Early detection and control measures, including carrier identification and drug treatment, are crucial for managing this emerging pathogen.
Area of Science:
- Veterinary Pathology
- Swine Diseases
- Emerging Infectious Diseases
Background:
- Eperythrozoonosis, caused by Eperythrozoon suis, is an emerging swine disease in China, characterized by febrile ictero-anemia.
- It often presents as a subclinical infection with a persistent carrier state, complicating control efforts.
- The disease is frequently diagnosed alongside other significant swine pathogens, exacerbating economic losses.
Purpose of the Study:
- To provide an overview of Eperythrozoonosis in swine, focusing on its epidemiology and impact in China.
- To highlight the challenges in diagnosis and the available control strategies for this emerging swine disease.
- To emphasize the economic significance and widespread prevalence of Eperythrozoonosis in Chinese swine populations.
Main Methods:
- Epidemiological surveillance data from China.
- Review of diagnostic methods, including traditional microscopy and newer techniques like ELISA and PCR.
- Analysis of clinical presentation and pathological findings associated with Eperythrozoonosis.
Main Results:
- Eperythrozoonosis has spread across China, affecting nearly all provinces and causing significant morbidity (up to 100% in herds) and mortality (10-20% nationally, over 60% including culling).
- High infection rates (over 90%) are observed on farms, particularly during epidemic seasons.
- While new diagnostics exist, traditional methods remain common; effective treatments include oxytetracyclines and doxycycline.
Conclusions:
- Eperythrozoonosis is a major emerging swine disease in China with substantial economic impact.
- Integrated control strategies, including carrier detection, prompt treatment, stress reduction, and improved sanitation, are essential.
- Continued surveillance and adoption of advanced diagnostics are recommended for effective management of porcine eperythrozoonosis.
