最近的研究表明，微小隐孢子虫卵囊对低剂量的中压紫外线（UV）高度敏感。这些研究提出了几个问题，包括确定灭活微小隐孢子虫卵囊所需的最小中压紫外线剂量，阐明用于灭活微小隐孢子虫卵囊的中压和低压紫外线之间的差异（如果有），以及评估中压紫外线灭活悬浮在较差水质中的卵囊的有效性。为了比较低压和中压紫外线，作者使用准直光束装置，在实验室规模上将悬浮在去离子水中的卵囊暴露于由中压或低压紫外线灯提供的紫外线中。 应用的紫外线剂量范围为3至33 mJ/cm2，并使用新生小鼠感染性试验评估卵囊失活。在3 mJ/cm2时，中压紫外线显示卵囊失活3.4对数，低压紫外线显示3.0对数，表明中压和低压紫外线在灭活微小隐孢子虫卵囊方面没有显著差异。包括9个参考文献、表格、图表。

Recent studies have shown that Cryptosporidium parvum oocysts demonstrate highsusceptibility to low dosages of medium-pressure ultraviolet (UV) light. These investigations have raised several questions, which include determination of minimum medium-pressure UV dosages necessary to inactivate C. parvum oocysts, elucidation of differences (if any) between medium- and low-pressure UV light for inactivating C. parvum oocysts, and evaluation of medium-pressure UV effectiveness in inactivating oocysts suspended in poorer quality water. To compare low- and medium-pressure UV, the authors exposed oocysts suspended in deionized water to UV delivered by either medium- or low-pressure UV lamps at bench scale using a collimated beam apparatus. The applied UV dosages ranged from 3 to 33 mJ/cm2, and oocyst inactivation was assessed using the neonatal mouse infectivity assay. At 3 mJ/cm2, medium-pressure UV showed a 3.4-log inactivation of oocysts, and low-pressure UV showed a 3.0-log inactivation, demonstrating medium- and low-pressure UV did not differ significantly in inactivating C. parvum oocysts. Includes 9 references, tables, figures.