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Updated: Aug 19, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
Published on: February 4, 2018
Borrelia infection in children
1Department of Paediatrics, Karolinska Institute, Sachs Children's Hospital, Stockholm, Sweden.
Insights
This study investigated Borrelia infection in children presenting with facial palsy or meningitis. A significant number of patients showed elevated Borrelia antibodies, indicating tick-borne illness is a concern.
Area of Science:
- Pediatric Infectious Diseases
- Neuroimmunology
- Tick-Borne Illnesses
Background:
- Children presenting with facial palsy, meningitis, or tick bite history were evaluated for Borrelia infection.
- The study focused on a pediatric population in an area with high incidence of tick-borne Borrelia infections.
Observation:
- Antibodies to Borrelia were investigated in serum and cerebrospinal fluid of 33 children.
- Elevated antibody titers were detected in 15 patients, with three cases showing antibodies only in cerebrospinal fluid.
Findings:
- Eight of the 15 positive cases had facial palsy, six concurrently with meningitis.
- Two cases of erythema chronicum migrans, a hallmark of Borrelia infection, were treated with oral penicillin.
- Borrelia infections were observed year-round, peaking in August.
Implications:
- Highlights the importance of considering Borrelia infection in pediatric cases of facial palsy and meningitis.
- Suggests cerebrospinal fluid analysis is crucial for diagnosing Borrelia infection when serum antibodies are absent.
- Emphasizes the diverse clinical presentations of Borrelia infection in children, necessitating broad diagnostic awareness.
Abstract:
All children (less than or equal to 15 years) admitted during 1986 to Sachs Children's Hospital and presenting signs of facial palsy and/or meningitis, or with a history of known tick bite followed by headache, fatigue and muscle pain, were investigated for antibodies to Borrelia in serum and cerebrospinal fluid. (The hospital's catchment area has a high incidence of tick-borne Borrelia infections.) Significantly elevated antibody titre was found in 15 of the 33 patients, in three cases only in cerebrospinal fluid. Eight of the 15 children had facial palsy, which was concomitant with meningitis in six cases. Intravenous penicillin was given to all 15 patients with positive antibody titre, and additionally to three severely ill small children with facial palsy and meningitis. Furthermore, two cases of erythema chronicum migrans, which is considered pathognomonic for Borrelia infection, were treated with penicillin perorally. Cases of Borrelia infection occurred throughout the year, but with a peak in August. To emphasize the variety of symptoms, three cases are presented in some detail.
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