Related Experiment Video
Updated: Jan 19, 2026

Reduced Itraconazole Concentration and Durations Are Successful in Treating Batrachochytrium dendrobatidis Infection in Amphibians
Published on: March 14, 2014
Giardiasis: report of a case refractory to treatment
José A Iza1, Shirley N Iza2, Mario J Olivera3
1Facultad de Medicina, Universidad Nacional de Colombia, Bogotá DC, Colombia.
Abstract:
Caused by the protozoan Giardia lamblia, giardiasis is one of the most common parasitic diarrheal infections affecting humans. Although a variety of antigiardial drugs are available to treat infections in humans, failure of conventional treatment with nitroimidazoles for giardiasis has been increasingly reported. We describe the follow-up of a patient with recurrent giardiasis refractory to nitroimidazoles. Despite the different therapies received, the symptomatology and parasitic forms of G. lamblia persisted in the patient. There is no standard treatment regimen for giardiasis refractory to nitroimidazoles. When treatment failure is confirmed, it is necessary to switch to second-line regimens.
Related Concept Videos
Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents
Fungal Phylum Microsporidia
Acute Pyelonephritis II: Diagnostic Studies and Management
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Gastritis III: Clinical Manifestations and Management
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
Diversity of Protists I

