Viliam Cibik

Up to 10% of patients with Lyme borreliosis (LB) will experience symptoms that fulfill the Infectious Disease Society of America (IDSA) criteria of post-treatment Lyme disease syndrome (PTLDS). This study assesses PTLDS in the Burden of Lyme Disease (BOLD) study through clinical assessment (“PTLDS Assessed by Clinicians”) and by post hoc evaluation of patient-reported outcomes, including the 36-Item Short Form Health Survey, Fatigue Severity Scale, and Cognitive Failures Questionnaire (“PTLDS Assessed by Questionnaire”). Among 242 LB cases who completed antibiotic treatment and had objective manifestations stabilized or resolved, 99 (40.9%) reported ≥1 symptom of fatigue, musculoskeletal pain, or cognitive impairment 10 months after diagnosis. Fifteen (6.2%) cases met the PTLDS criteria assessed by either clinicians or predefined questionnaire severity thresholds; four (1.7%) met both. PTLDS cases assessed by questionnaires and LB cases with persistent symptoms both reported greater symptom severity and poorer physical functioning than PTLDS cases assessed by clinicians. These exploratory findings suggest that clinician- and questionnaire-based assessments may identify partially different subsets of patients with PTLDS and either method could underestimate the proportion of patients with PTLDS.

Lyme borreliosis (LB), the most common European tick-borne disease, can manifest as an erythema migrans (EM) rash or as disseminated LB. The prospective Burden of Lyme Disease (BOLD) study evaluated the frequency of LB clinical manifestations, including signs, symptoms, and treatment patterns in 14 healthcare practices in endemic regions of six European countries: the Czech Republic, Germany, Poland, Slovakia, Slovenia, and Sweden. Between April 2021 and December 2022, patients with suspected LB were evaluated using predefined case definitions that were applied by investigators to identify medically attended LB cases. Enrolled cases were interviewed about their symptoms. Among the 797 LB cases, 615 (77.2%) had EM and 182 (22.8%) had disseminated disease; 154 of the disseminated cases had Lyme arthritis (LA), five had Lyme neuroborreliosis, and three had Lyme carditis. Geographically, the proportion of disseminated disease varied by country, from 1.1% in Slovenia to 78.0% in Slovakia. Overall, 76.3% of all LB cases in Slovakia were LA. Antibiotic use varied by country, although every country prescribed doxycycline. The frequency of LB manifestations varied substantially between countries. EM was the most common manifestation in all countries except Slovakia, where LA was most common. This study underscores the need for improved prevention strategies.