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Updated: Oct 15, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
Published on: February 4, 2018
[Clinical characteristics of tick-borne encephalitis complicated by Lyme borreliosis]
Abstract:
Clinical characteristics of mixed tick borne encephalitis (TBE) + Lyme borrelliosis (LB) infection and monoinfections are compared. Eighty-five patients with TBE + LB mixed infection serologically verified by EIA and 87 with isolated TBE, who fell ill in 1996, were examined. Among patients with mixed infection, cases with blurred TBE predominated; severe forms (meningeal and focal) were almost two times less incident than in TBE monoinfection. Typical clinical symptoms of LB were observed in 63.5% patients, while in the rest 36.5% LB manifested only by circulation of antibodies to B. burgdorferi. Comparative analysis of patients with mixed TBE + LB infection and TBE monoinfection confirmed a more benign course of TBE during the acute period in patients with mixed infection. Mixed infection should be ruled out or confirmed by thorough clinical examinations with obligatory detection of antibodies to agents of both diseases.
Insights
Co-infection with tick-borne encephalitis (TBE) and Lyme borreliosis (LB) results in a milder TBE disease course. Early detection of both TBE and LB infections is crucial for accurate diagnosis and management.
Area of Science:
- Infectious Diseases
- Neurology
- Epidemiology
Background:
- Tick-borne encephalitis (TBE) and Lyme borreliosis (LB) are significant tick-borne diseases.
- Co-infections can alter disease presentation and severity.
- Understanding mixed TBE and LB infections is vital for clinical management.
Purpose of the Study:
- To compare the clinical characteristics of mixed TBE + LB infections with TBE monoinfection.
- To evaluate the impact of co-infection on TBE disease severity.
- To highlight the importance of diagnosing co-infections.
Main Methods:
- Retrospective analysis of 85 patients with confirmed TBE + LB mixed infection.
- Comparison with 87 patients diagnosed with TBE monoinfection.
- Serological verification using enzyme immunoassay (EIA).
Main Results:
- Mixed TBE + LB infections predominantly presented with milder, blurred TBE symptoms.
- Severe TBE forms (meningeal, focal) were significantly less frequent in mixed infections compared to TBE monoinfection.
- Lyme borreliosis symptoms were present in 63.5% of mixed cases; 36.5% showed only antibody circulation.
Conclusions:
- Mixed TBE and LB co-infection is associated with a more benign acute phase of TBE.
- Thorough clinical evaluation and serological testing for both pathogens are essential for accurate diagnosis of mixed infections.
- Distinguishing mixed infections from monoinfections aids in appropriate patient management.
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