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Korean J Parasitol > Volume 30(4):1992 > Article

Original Article
Korean J Parasitol. 1992 Dec;30(4):259-262. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1992.30.4.259
Copyright © 1992 by The Korean Society for Parasitology
Experimental Cryptosporidium parvum infection in a Korean native calf isolated from a Korean mouse
S H Wee,C G Lee,*H D Joo and Y B Kang
Veterinary Research Institute, RDA, Anyang 430-016, Korea.

This study was performed to investigate experimental transmission of Cryptosporidium parvum in a calf. A 25-day-old Korean native calf was inoculated per os with 1 × 106C. parvum oocysts isolated from a Korean mouse. The calf commenced oocyst discharge in feces on post-inoculation day 4, and continued until the day 11. The number of discharged oocysts peaked (4.9 × 105) on post-inoculation day 6. However, the calf did not show signs of diarrhea. The present results indicate that C. parvum is cross-transmissible between the calf and the mouse.


Fig. 1
Patterns of oocyst discharge in a Korean native calf experimentally infected with 106C. parvum oocysts originated from a mouse.

Fig. 2
Oocysts recovered from feccs of a Korean native calf by the Shcather's sugar centrifugal floatation method (×400).

Figs. 3-4
Fig. 3. Oocyst recovered from feces of a Korean native calf by the DMSO-modified acid fast staining technique (×1,000).

Fig. 4. Immunofluorescence staining of oocysts from fecal samples of a Korean native calf using nomoclonal antibody (×250).

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