Health Care Provider Information on Giardiasis - Minnesota Dept. of Health

Health Care Provider Information on Giardiasis

On this page:
Required Disease Reporting
Parasite Information
Clinical Features
Laboratory Diagnosis
Treatment

Required Disease Reporting

Parasite Information

Clinical Features

  • The spectrum varies from asymptomatic carriage to severe diarrhea and malabsorption.
  • Acute giardiasis develops after an incubation period of 1 to 3 weeks and usually lasts 2 to 6 weeks.
  • Symptoms include diarrhea, abdominal pain, bloating, nausea, and weight loss.
  • In chronic giardiasis the symptoms are recurrent and malabsorption and debilitation may occur.

Laboratory Diagnosis

Treatment

  • Some infections are self-limited and treatment may not be required.
  • The prescription drugs metronidazole, tinidazole, and nitazoxanide are the drugs of choice to treat giardiasis.
  • Paromomycin is recommended for treatment of symptomatic infection in pregnant women in the second and third trimester.
  • Rapid loss of fluids because of diarrhea can be managed by fluid and electrolyte replacement.
  • Treatment of asymptomatic carriers generally is not recommended.
  • Parasites - Giardia: Treatment
    CDC; Giardiasis treatment information.

Updated Friday, 27-Apr-2018 11:41:01 CDT