Related Experiment Video
Updated: Aug 17, 2026

The Madagascar Hissing Cockroach as an Alternative Non-mammalian Animal Model to Investigate Virulence, Pathogenesis, and Drug Efficacy
Published on: November 24, 2017
Melioidosis, an environmental and occupational hazard in Thailand
T Thummakul1, H Wilde, T Tantawichien
1Department of Medicine, Bhumibol Adulyadej Hospital (Royal Thai Air Force Medical Center), Bangkok, Thailand.
Abstract:
Melioidosis is a tropical environmental hazard that causes acute and chronic pulmonary disease, abscesses of the skin and internal organs, meningitis, brain abscess and cerebritis, and acute fulminant rapidly fatal sepsis. It is more common among adults, individuals with diabetes, and individuals with chronic renal disease, but it can occur in normal hosts and children. Burkholderia pseudomellei is the most prevalent cause of community-acquired pneumonia, liver and splenic abscess, and sepsis in northeastern Thailand. Melioidosis can reactivate years after primary infection and result in chronic or acute life-threatening disease. With increasing worldwide travel and migration, patients may present in nonendemic countries with reactivation melioidosis decades after leaving an endemic region. We discuss seven selected patients presenting with this disease to a tertiary care facility in Bangkok between 1995 and 1997. Awareness should allow early diagnosis and treatment, which can lead to decreased morbidity and mortality.
Insights
Melioidosis, a tropical disease caused by Burkholderia pseudomellei, can lead to severe sepsis and organ damage. Early diagnosis and treatment are crucial for reducing severe outcomes in affected patients.
Area of Science:
- Infectious Diseases
- Tropical Medicine
- Microbiology
Background:
- Melioidosis is a significant tropical environmental hazard caused by Burkholderia pseudomellei.
- It presents with diverse clinical manifestations, including pulmonary disease, abscesses, meningitis, and sepsis.
Observation:
- The disease disproportionately affects adults, individuals with diabetes, and those with chronic renal disease, but can occur in healthy individuals and children.
- Burkholderia pseudomellei is a leading cause of community-acquired pneumonia and sepsis in endemic regions like northeastern Thailand.
Findings:
- Melioidosis can reactivate years after the initial infection, presenting as chronic or acute life-threatening illness.
- Increasing global travel means patients may develop reactivation melioidosis in non-endemic areas decades after exposure.
Implications:
- Seven patient cases presenting to a Bangkok tertiary care facility between 1995 and 1997 highlight the challenges of diagnosing reactivation melioidosis.
- Increased awareness of melioidosis is essential for enabling early diagnosis and prompt treatment, thereby reducing patient morbidity and mortality.
Related Concept Videos
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
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 progression...
Inhalation Anthrax
Tuberculosis

