General Biosecurity Methods Against Eimeria

Most disinfectants used commonly against other pathogens cannot penetrate through the oocyst wall to kill the infective sporozoites. Under laboratory conditions, when an oocyst is held at 4°C, they may last as long as 2 years. In soil, infective oocysts have also been shown to last as long as 602 days (1).

While the oocyst wall is not sticky, it can be carried around by the action of personnel, rodents, flies, dust and even forced air movements. Additionally, should the barn environment contain crevices or porous surfaces (e.g. cement), oocysts may remain in these areas and when the barn is cleaned, the cleaner must take extra precautions with these areas. 

References

1. Reid, M.W. History of avian medicine in the United States. X. Control of coccidiosis. Avian Diseases 34:509-525. 1990.