Related Experiment Video

Updated: Aug 9, 2026

Intratracheal Inoculation of Fischer 344 Rats with Francisella tularensis
06:09

Intratracheal Inoculation of Fischer 344 Rats with Francisella tularensis

Published on: September 30, 2017

Rickettsia typhi infection in childhood

M Bitsori1, E Galanakis, A Gikas

  • 1Department of Paediatrics, University of Crete, Heraklion, Greece.

Acta Paediatrica (Oslo, Norway : 1992)
|March 9, 2002
PubMed

Insights

Rickettsia typhi infection, or murine typhus, is often missed in children. This study highlights key symptoms like prolonged fever, rash, and enlarged lymph nodes, aiding in earlier diagnosis of this treatable condition.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Epidemiology

Background:

  • Rickettsia typhi infection, commonly known as murine typhus, is frequently underdiagnosed in pediatric populations due to non-specific clinical presentations.
  • Prompt diagnosis and treatment are crucial for favorable outcomes in childhood rickettsial infections.

Purpose of the Study:

  • To describe the clinical manifestations and diagnostic findings of Rickettsia typhi infection in hospitalized children.
  • To emphasize the importance of considering murine typhus in the differential diagnosis of febrile illnesses in children.

Main Methods:

  • A retrospective review of nine pediatric cases of Rickettsia typhi infection hospitalized between 1998 and 2000.
  • Diagnostic criteria included specific IgM and IgG antibody titers against Rickettsia typhi.

Main Results:

  • Common symptoms observed in children included prolonged fever, hepatosplenomegaly, and lymphadenopathy.
  • Rash was present in five children, with unusual presentations such as aseptic meningitis and Kawasaki-like illness noted.
  • Laboratory findings frequently included anemia, leucopenia, and thrombocytopenia.

Conclusions:

  • Rickettsia typhi infection should be considered in the differential diagnosis for children in Southern Europe presenting with prolonged fever, rash, and lymphadenopathy.
  • Early recognition and appropriate antibiotic treatment lead to complete recovery in pediatric cases of murine typhus.
Abstract

More Related Videos

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines07:18

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines

Published on: October 11, 2022

Extraction of Saliva, Haemolymph, Salivary Glands, and Midgut from Individual Ticks (Acari: Ixodidae)03:22

Extraction of Saliva, Haemolymph, Salivary Glands, and Midgut from Individual Ticks (Acari: Ixodidae)

Published on: October 31, 2025

Related Concept Videos

Rocky Mountain Spotted Fever01:26

Rocky 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.
Streptococcal Pharyngitis01:27

Streptococcal Pharyngitis

Streptococcal pharyngitis, commonly known as “strep throat,” is an acute infection of the oropharyngeal tissues caused by the Gram‑positive Group A Streptococcus (Streptococcus pyogenes). Transmission occurs primarily through respiratory droplets expelled during coughing, sneezing, or talking.Mechanisms of Host Entry and Immune EvasionUpon entering the host, S. pyogenes adheres to the mucosal epithelial cells of the pharynx via surface proteins, notably lipoteichoic acid and the antiphagocytic...
Poliomyelitis01:17

Poliomyelitis

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...
Toxoplasmosis01:28

Toxoplasmosis

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...
American Trypanosomiasis01:22

American Trypanosomiasis

Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Giardiasis01:12

Giardiasis

Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...