研究了在28、45和100kHz频率下用高强度超声波灭活微小环孢菌卵囊的可能性。在平底反应器中分批处理卵囊。在一次失活试验中，在显微镜下观察卵囊，并测试其感染小鼠的能力。治疗后，卵囊壁破裂。这种卵囊在制剂中的比例与制剂的传染性程度有关。最低频率28kHz对卵囊失活最有效。在10分钟的治疗中，97%的卵囊破裂，传染性低于基线的1%。 随着治疗时间的延长，失活率更高。在这一实验中，高强度的超声空化似乎涉及到卵囊的失活机制。包括6个参考文献、图表。

The possibility of the inactivation of Cyrptosporidium parvum oocysts by high-intensity ultrasonic waves at frequencies of 28, 45, and 100 kHz was examined. Oocysts in a flat-bottomed reactor were treated in batches. The oocysts were observed under a microscope in one test of inactivation, and also were tested for their ability to infect mice. After treatment, some oocysts had breaks in their walls, through which the nucleus had leaked. The proportion of such oocysts in a preparation was related to the degree of infectivity of the preparation. The lowest frequency, 28 kHz, was most effective in inactivating oocysts. With 10 minutes of treatments, 97% of the oocysts had ruptured, and infectivity was less than 1% of the base line. With longer treatment, inactivation was greater. The mechanism of inactivation of oocysts by high-intensity ultrasonic waves in this experiment seemed to involve cavitation. Includes 6 references, figures.