CCL17 and tick-borne encephalitis: BALF CCL17 showed significant weak correlation with A-aDO2 (r = -0.362, P = 0.045), %VC (r = -0.342, P = 0.060), FEV1/FVC (r = 0.399, P = 0.026), centrilobular nodules (r = 0.398, P = 0.033), and TBE grade (r = 0.386, P = 0.039) and significant moderate correlation with BALF neutrophils (r = 0.412, P = 0.021), GGO score (r = -0.421, P = 0.023) and consolidation (r = 0.634, P < 0.001).