Page 29 - Medical Parasitology_ A Textbook ( PDFDrive )
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Giardia lamblia                                                 21








                            2
                            d








               Contamination of water, food, or
               hands/fomites with infective cysts.



                                 Trophozoites are also
                                 passed in stool but
                                 they do not survive in
                                 the environment.



                               1
              i  = Infective Stage  i
                                               d
              d  = Diagnostic Stage  d  Cyst









                                     3             4                5
                           Trophozoites
               Cyst
            Fig. 4.2  Life cycle of Giardia lamblia (Reproduced from https://www.cdc.gov/dpdx/giardiasis/
            index.html)

              3.  Molecular diagnosis
                 PCR on stool specimen.



              Treatment

            Metronidazole (250 mg 3 times daily for 5 days) or tinidazole is the drug of choice.
            Paromomycin can be given to symptomatic pregnant woman.
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