동절기 자연수계 환경에 노출된 크립토스포리디움의 활성 및 감염성 변화

Variation of Viability and Infectivity of Cryptosporidium Exposed to River Environments During Winter

In order to know the duration of viability and infectivity of Cryptosporidium sp. when the Cryptosporidium sp. is discharged to natural water environment, the change on viability and infectivity of Cryptosporidium sp. was investigated with semipermeable cellulose tube containing infective Cryptosporidium, depending on the changes of temperature and pH during winter (Dec. 05~Feb. 06). As a result, its infectivity was reduced after 30 days to 50% and after 50 days it was almost lost. And it was confirmed that its viability was reduced to about 8% after 90 days. In order to know the duration of viability and infectivity of Cryptosporidium sp. when the Cryptosporidium sp. is discharged to natural water environment, the change on viability and infectivity of Cryptosporidium sp. was investigated with semipermeable cellulose tube containing infective Cryptosporidium, depending on the changes of temperature and pH during winter (Dec. 05~Feb. 06). As a result, its infectivity was reduced after 30 days to 50% and after 50 days it was almost lost. And it was confirmed that its viability was reduced to about 8% after 90 days.