Related Experiment Video
Updated: Jul 26, 2026
06:05
Polymerase Chain Reaction and Dot-Blot Hybridization for Leptospira Detection in Water Samples
Published on: June 14, 2024
[Leptospirosis in French Polynesia: 120 case reports]
Y Gendron1, J Prieur, X Gaufroy
1Médecin des Hôpitaux, Clinique Cardella Papeete, Polynésie Française.
Medecine Tropicale : Revue Du Corps De Sante Colonial
|January 1, 1992
Summary
Leptospirosis is a common yet often undetected infection in French Polynesia, characterized by fever, headache, and muscle pain. Early diagnosis and Penicillin G treatment lead to rapid recovery in most cases, though relapses and complications can occur.
Area of Science:
- Infectious Diseases
- Bacteriology
- Epidemiology
Context:
- Leptospirosis is a significant public health concern in French Polynesia.
- The disease presents with diverse clinical manifestations, complicating diagnosis.
- Bacteriological and serological diagnostic challenges contribute to underdetection.
Purpose:
- To describe the clinical and evolutionary features of leptospirosis.
- To analyze the presentation of leptospirosis in a homogenous series of confirmed cases.
- To evaluate treatment outcomes and mortality rates.
Summary:
- A study of 120 confirmed leptospirosis cases (1984-1990) in French Polynesia revealed common symptoms including fever (91.6%), headache (79.16%), and myalgia (70.83%).
- Observed syndromes included infectious, meningeal, liver, renal, neurological, hemorrhagic, cardiovascular, and pulmonary manifestations.
- Treatment with Penicillin G resulted in rapid recovery for most patients (65.8%), with a mortality rate of 2.5%.
Impact:
- Highlights the importance of recognizing diverse clinical presentations for timely leptospirosis diagnosis.
- Provides valuable epidemiological data on leptospirosis in French Polynesia.
- Informs clinical management strategies and public health interventions for leptospirosis.
Related Concept Videos
01:30Bacterial Phylum Spirochaetes
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
01:26Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
01:24Plague
Plague is a highly virulent zoonotic disease caused by Yersinia pestis, a Gram-negative, facultatively anaerobic coccobacillus. This pathogen primarily circulates among rodent populations and is transmitted to humans through the bite of infected fleas. Additional transmission routes include direct contact with infected animal tissue or inhalation of respiratory droplets from individuals with pneumonic plague. These multiple transmission pathways highlight the bacterium’s potential for rapid...
01:17Poliomyelitis
Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
01:30Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
01:28Toxoplasmosis
Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...