TABLE 3.

Results of microbiological analyses (serology, PCR and culture) in 22 patients diagnosed with primary pulmonary tularaemia at Innlandet Hospital Trust in Norway in 2016–2018

	Positive	Negative
First serological test	17	5
Second serological test	5	0
PCR EBUS-TBNA	2	3
PCR BAL	1	3
PCR lung biopsy#	1	0
PCR pleural fluid	0	1
Culture¶	0	11

EBUS-TBNA: endobronchial ultrasound-guided transbronchial needle aspiration; BAL: bronchoalveolar lavage. ^#: four out of five lung biopsies were not investigated for Francisella tularensis; ^¶: cultures from five EBUS-TBNAs, four BALs, one pleural fluid and one computed tomography-guided lung biopsy.