Page 70 - Medical Parasitology_ A Textbook ( PDFDrive )

Cryptosporidium parvum 63

i
3 Thick-walled oocyst
ingested by host

Recreational water Drinking water
Contamination of water
and food with oocysts. 2

i = Infective Stage
1 Thick-walled oocyst d i
d = Diagnostic Stage (sporulated) exits host
j Thick-walled b Sporozoite c Trophozoite Type I meront
oocyst (sporulated) a Oocyst d e
exits host

Auto-infection
Asexual Cycle
k
Thin-walled
oocyst Merozoitte
(sporulated) Microgamont
Microgametes
f
g Undifferentiated
Gamont
Type II Meront
Merozoites
Macrogamont Sexual Cycle
Zygote h
i

Fig. 7.6 Life cycle of Cryptosporidium parvum (Reproduced from https://www.cdc.gov/dpdx/
cryptosporidiosis/index.html)