AIM: The aim of the study was to evaluate the clinical course and effectiveness of diagnostics tools for Babesia spp. infection in patients bitten by ticks. MATERIALS AND METHODS: Five hundred and forty-eight patients hospitalised or seen in outpatients department because of various symptoms after a tick bite were included in the study. PCR, nucleotide sequencing of Babesia 18S rRNA gene fragment, blood smears and serological tests for Babesia spp., TBEV, A. phagocytophilum and B. burgdorferi were performed in all patients. Six patients infected with Babesia were included in the final analysis. They had PCR, Babesia 18S rRNA gene fragment nucleotide sequencing, blood smears and serological tests for Babesia spp., TBEV, A. phagocytophilum and B. burgdorferi performed twice. RESULTS: Tick-borne infection with Babesia microti in six immunocompetent patients with non-specific symptoms was confirmed for the first time in Poland. No severe course of the disease was seen. No piroplasm forms were noticed within erythrocytes on blood smear. Three patients developed a serological response. CONCLUSIONS: Immunocompetent patients may be unaware of infection with Babesia microti after a tick bite. It must be included in the differential diagnosis after the tick bite. In patients with low parasitaemia PCR and serology seem useful when blood smear is negative. Self-elimination of Babesia spp. is possible, especially in cases with low parasitaemia.
AIM: The aim of the study was to evaluate the clinical course and effectiveness of diagnostics tools for Babesia spp. infection in patients bitten by ticks. MATERIALS AND METHODS: Five hundred and forty-eight patients hospitalised or seen in outpatients department because of various symptoms after a tick bite were included in the study. PCR, nucleotide sequencing of Babesia 18S rRNA gene fragment, blood smears and serological tests for Babesia spp., TBEV, A. phagocytophilum and B. burgdorferi were performed in all patients. Six patients infected with Babesia were included in the final analysis. They had PCR, Babesia 18S rRNA gene fragment nucleotide sequencing, blood smears and serological tests for Babesia spp., TBEV, A. phagocytophilum and B. burgdorferi performed twice. RESULTS:Tick-borne infection with Babesia microti in six immunocompetent patients with non-specific symptoms was confirmed for the first time in Poland. No severe course of the disease was seen. No piroplasm forms were noticed within erythrocytes on blood smear. Three patients developed a serological response. CONCLUSIONS: Immunocompetent patients may be unaware of infection with Babesia microti after a tick bite. It must be included in the differential diagnosis after the tick bite. In patients with low parasitaemia PCR and serology seem useful when blood smear is negative. Self-elimination of Babesia spp. is possible, especially in cases with low parasitaemia.
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Authors: Kaitlin M Young; Tricia Corrin; Barbara Wilhelm; Carl Uhland; Judy Greig; Mariola Mascarenhas; Lisa A Waddell Journal: PLoS One Date: 2019-12-30 Impact factor: 3.240