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Updated: Jun 26, 2026

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Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
Published on: February 4, 2018
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Lyme disease in Poland in 2021
Jakub Zbrzeźniak1, Iwona Paradowska-Stankiewicz1
1National Institute of Public Health NIH - National Research Institute Department of Epidemiology of Infectious Diseases and Surveillance.
Przeglad Epidemiologiczny
|February 9, 2024
Summary
Lyme disease cases in Poland decreased by 3.4% in 2021, remaining below pre-pandemic levels. The seasonal pattern of Lyme disease persisted, with most cases reported in the third quarter.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Background:
- Lyme disease is a tick-borne zoonosis with various clinical manifestations.
- Tick activity, influenced by seasons, affects Lyme disease incidence.
- Poland monitors Lyme disease trends annually.
Purpose of the Study:
- To evaluate the 2021 epidemiological situation of Lyme disease in Poland.
- To compare 2021 data with previous years' trends.
- To assess the ongoing impact of the COVID-19 pandemic on Lyme disease reporting.
Main Methods:
- Utilized data from Voivodeship Sanitary-Epidemiological Stations.
- Analyzed the annual bulletin "Infectious diseases and poisonings in Poland in 2021".
- Compared 2021 case numbers and hospitalizations with prior years.
Main Results:
- 12,500 Lyme disease cases and 411 hospitalizations were recorded in 2021.
- This represents a 3.4% decrease in cases and a 10.5% decrease in hospitalizations compared to previous periods.
- Case numbers remained below the pre-COVID-19 pandemic level of approximately 20,000 annually.
- The seasonal distribution of cases persisted, with peaks in Q3 and lowest incidence in Q1.
Conclusions:
- The COVID-19 pandemic continued to influence reported Lyme disease case numbers in 2021.
- Reported cases in 2021 were lower than in the initial pandemic year.
- The characteristic seasonality of Lyme disease was maintained throughout the year.
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