ERS 2025 dose-ranging trial (6g vs 18g vs placebo): https://publications.ersnet.org/content/erj/66/suppl69/pa1710

The short version: the ERS 2025 trial you linked is not in the evidence I was given, so I cannot report its results. What the retrieval surfaced instead is a set of studies on unrelated topics.

The evidence block contains no record matching the ERS 2025 dose-ranging trial (6 g vs 18 g vs placebo) for any respiratory condition. The studies retrieved cover ulcerative colitis, tuberculosis, cancer, leishmaniasis, Behçet's disease, and COPD — none of them the trial you asked about. The closest in topic is a 2003 COPD trial of salmeterol/fluticasone [12], which is a different drug class, different doses, and a different era.

This means the retrieval system did not find the study you named. That is a limitation of the search, not a finding about the trial itself. I cannot report efficacy, safety, or dose-response data for the ERS 2025 trial because the evidence I was given does not include it. I also cannot say whether the trial was funded by the manufacturer, used surrogate endpoints, or compared the vaccinated to the vaccinated — those questions would require the actual study text.

My call: the evidence provided does not answer the question. Confidence: not clear — the trial exists at the URL you gave, but it is absent from the retrieval, so no judgment about its quality or findings is possible from these records.