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Rickettsioses in Children - A Review
Ashwani K Sood1, Amit Sachdeva2
1Department of Pediatrics and Adolescent Medicine, Indira Gandhi Medical College, Shimla, India. doc.aksood@gmail.com.
Abstract:
Rickettsial diseases, caused by a variety of obligate intracellular, Gram-negative bacteria from the genera Rickettsia, Orientia, Ehrlichia, Neorickettsia, Neoehrlichia, and Anaplasma are considered some of the most covert emerging and re-emerging diseases. Scrub typhus, murine flea-borne typhus and Indian tick typhus are commonly being reported and during the last decade. Scrub typhus (ST) has emerged as a serious public health problem in India. Rickettsial infections are generally incapacitating and difficult to diagnose; untreated cases have case fatality rates as high as 30-45% with multiple organ dysfunction, if the specific treatment is delayed. Early clinical suspicion, timely diagnosis followed by institution of specific antimicrobial therapy shortens the course of the disease, lowers the risk of complications and reduces morbidity and mortality due to rickettsial diseases. Still there is large gap in our knowledge of Rickettsioses and the vast variability and non-specific presentation of these have often made it difficult to diagnose clinically. The present review describes the epidemiology, clinical manifestations, diagnostic modalities and treatment of Scrub typhus which is a vastly underdiagnosed entity and clinicians should suspect and test for the disease more often.
Insights
Scrub typhus, a severe rickettsial disease, is underdiagnosed in India. Early diagnosis and treatment of scrub typhus are crucial to prevent high mortality and organ dysfunction.
Area of Science:
- * Infectious Diseases
- * Public Health
- * Microbiology
Background:
- * Rickettsial diseases, caused by Gram-negative bacteria, are emerging global health threats.
- * Scrub typhus (ST), murine flea-borne typhus, and Indian tick typhus are frequently reported.
- * Scrub typhus is a significant and underdiagnosed public health issue in India.
Purpose of the Study:
- * To review the epidemiology, clinical manifestations, diagnostic methods, and treatment of scrub typhus.
- * To highlight the challenges in diagnosing scrub typhus due to its variable and non-specific presentation.
- * To emphasize the need for increased clinical suspicion and testing for scrub typhus.
Main Methods:
- * Literature review of rickettsial diseases, with a focus on scrub typhus.
- * Analysis of epidemiological trends, clinical presentations, and diagnostic challenges.
- * Summary of current treatment guidelines and outcomes.
Main Results:
- * Rickettsial infections, particularly scrub typhus, are often difficult to diagnose clinically.
- * Delayed diagnosis and treatment of scrub typhus can lead to high fatality rates (30-45%) and multiple organ dysfunction.
- * Scrub typhus is a vastly underdiagnosed entity in India, despite its public health significance.
Conclusions:
- * Early clinical suspicion, prompt diagnosis, and timely antimicrobial therapy are essential for managing rickettsial diseases like scrub typhus.
- * Increased awareness and diagnostic testing for scrub typhus among clinicians are necessary.
- * Further research is needed to bridge the knowledge gap regarding rickettsioses and improve diagnostic accuracy.
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