Annual report · 2026 (year to date)

Lyme / PTLDS: state of the evidence 2026

What the Open Source Medicine Foundation research tracker holds on Chronic Lyme / Post-Treatment Lyme Disease Syndrome for 1 January to 7 October 2026: literature flow, registered trials, agents under study, catalogued biomarkers and cohorts. Every figure is computed from the public JSON files linked at the end of this page.

  1. Research Tracker
  2. Annual Reports
  3. Lyme / PTLDS: state of the evidence 2026
Contents:

Summary

39studies dated 2026 in the feed
1registered trials matched
1trials recruiting or active
0trials started in 2026
36biomarkers catalogued
1research cohorts indexed
Read this first. The literature feed is a rolling window of the 75 most recent PubMed results for this condition (currently spanning 1 January 2025 to 5 July 2026), not a complete census of 2026 publications. Monthly counts before the window opens are zero for that reason, not because nothing was published. Only 1 trials match this condition; percentages would be misleading at this size, so counts are shown. Trials for this condition are identified by keyword match on the registry title and condition field, because the tracker's curated condition mapping does not yet cover it. Expect both misses and false positives. The literature feed was last refreshed on 8 July 2026; figures are as of that snapshot.

Literature indexed in 2026

The Lyme / PTLDS feed holds 39 PubMed records with a 2026 publication date (39 unique PMIDs) out of 75 records in the feed, drawn from 31 distinct journals. This is a moderate sample.

Studies indexed per month, 202648Jan 2026: 77JanFeb 2026: 88FebMar 2026: 88MarApr 2026: 66AprMay 2026: 44MayJun 2026: 44JunJul 2026: 22JulAugSepOctNovDec
Records by publication month, 2026. Grey month labels are in the future. Months before the feed window opened are zero by construction.

Top journals

Top journals, 2026Pathogens (Basel, Switzerland)Pathogens (Basel, Switzerland): 33Infection and immunityInfection and immunity: 22Clinical infectious diseases …Clinical infectious diseases : an official publication of the Infectious Diseases Society of America: 22Parasites & vectorsParasites & vectors: 22Scientific reportsScientific reports: 22bioRxiv : the preprint server…bioRxiv : the preprint server for biology: 22CureusCureus: 22Transfusion and apheresis sci…Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis: 11Annals of agricultural and en…Annals of agricultural and environmental medicine : AAEM: 11Frontiers in public healthFrontiers in public health: 11
Journals with the most 2026 records in the feed (top 10; ties broken by first appearance).

Browse the live feed: Lyme / PTLDS research tracker. Weekly changes are in the research digest.

Clinical trials

1 of the 629 ClinicalTrials.gov records in the tracker snapshot (taken 2026-10-07) match Lyme / PTLDS (1 via keyword match). 1 are recruiting, not yet recruiting, enrolling by invitation or active; 0 list a 2026 start date and 1 had their registry record updated in 2026. Median planned or actual enrollment is 120 participants (1 trials report a figure).

By status

Trials by statusRecruitingRecruiting: 11
Overall status as recorded on ClinicalTrials.gov at snapshot.

By phase

Trials by phasePhase 1Phase 1: 11
"Not applicable" covers behavioural, device, rehabilitation and observational designs.

By sponsor type

Trials by sponsor typeAcademic / otherAcademic / other: 11
Lead-sponsor class from the registry; "Academic / other" is the registry's OTHER category.

Agents under investigation

Top agents by trial countLumbrokinaseLumbrokinase: 11
Interventions named in the most matched trials (top 1 of 1 distinct agents). A trial testing several agents counts once per agent.
AgentTrialsOf which active
Lumbrokinase11

All tracked trials: clinical trials tracker.

Therapeutic agents catalogue

The OSMF therapeutic-agents catalogue lists 4 agents with Lyme as a primary condition (of 605 agents overall). Evidence level is the catalogue's own coarse grading, assigned automatically from the number and type of linked studies and trials; it is not a GRADE assessment.

Agents by evidence levelModerateModerate: 33AnecdotalAnecdotal: 11
Catalogue evidence grading: anecdotal, preliminary or moderate. No agent for any condition is graded higher than moderate.

Browse: therapeutics atlas and agents.

Biomarkers catalogued

The Lyme / PTLDS biomarker atlas (last edited 2026-06-29) holds 36 marker entries across 7 categories, citing 5 distinct DOIs: 23 reported elevated, 2 reduced and 11 with mixed or inconsistent findings. Direction is relative to the comparison group in the cited source (usually healthy controls) and a single entry can rest on one study.

Biomarkers by category and directionSerologicSerologic - up: 99CSFCSF - up: 4CSF - mixed: 26InflammatoryInflammatory - up: 4Inflammatory - mixed: 26MolecularMolecular - up: 1Molecular - mixed: 34Co-infectionCo-infection - up: 44Chronic/PTLDSChronic/PTLDS - down: 1Chronic/PTLDS - mixed: 34FunctionalFunctional - up: 1Functional - down: 1Functional - mixed: 13
Elevated   Reduced   Mixed / inconsistent   Not stated
Marker entries by atlas category, split by reported direction of change.
CategoryElevatedReducedMixedTotal
Serologic9009
CSF4026
Inflammatory4026
Molecular1034
Co-infection4004
Chronic/PTLDS0134
Functional1113

Full atlas: Lyme / PTLDS biomarker atlas.

Research cohorts

1 of the 32 cohorts in the OSMF post-acute infection syndrome (PAIS) cohort database relate to Lyme / PTLDS, together enrolling about 234 participants where a figure is recorded. This is a curated database, not a systematic census of cohorts.

CohortDesignEnrolledBiobankRegistration
Johns Hopkins SLICE early-Lyme cohort (Aucott/Rebman)prospective inception234active—

Methods

This page was generated by scripts/build_reports.py on 7 October 2026 from the data snapshot described below. No number is entered by hand.

Limitations

Download the data

All inputs are public JSON files in the research-tracker repository, licensed for reuse with attribution.

Suggested citation

Open Source Medicine Foundation. Lyme / PTLDS: state of the evidence 2026 (year-to-date, generated 7 October 2026). Open Source Medicine Foundation; 2026. https://research.opensourcemed.info/reports/lyme-state-of-the-evidence-2026.html

For a stable reference, cite the generation date shown; the page is regenerated as data arrive. Weekly updates: subscribe on Substack or follow the digest RSS feed.

Disclaimer. This report is an automated description of a research database maintained by the Open Source Medicine Foundation. It is not a systematic review and not medical advice. Discuss any treatment decision with a qualified clinician.