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Table 5 Survey answers regarding diagnostic procedures for Legionnaires’ disease, Norway, 2018

From: Evaluation of the national surveillance of Legionnaires' disease in Norway, 2008-2017

QuestionAnswer categoriesn%
Does the hospital or hospital unit have an internal procedure or algorithm for which patients to test for Legionella?Yes, one that all doctors should follow1430
No, it is up to each responsible doctor2962
No, other12
Don’t know36
Do you test all patients with suspected pneumonia for Legionella?Yes817
No3881
Don’t know12
Do you test all patients with suspected pneumonia and a travel history for Legionella?Yes1838
No2349
Don’t know613
Which diagnostic test(s) do you use at your unit to diagnose/confirm Legionella? Choose all that applyUrine antigen test4494
Culture and isolation2349
PCR3166
Serology36
Don’t know36
Other (free text)12
Where is the urine antigen test normally carried out? (n = 44)At the hospital unit37
By the hospital laboratory3580
It varies, both at the unit and by the laboratory49
Don’t know12
Other (free text)12
Do you try to confirm a positive urine antigen test with culture and isolation of BAL or sputum? (n = 44)Yes, always716
Yes, usually2148
Rarely818
No, never00
Don’t know818
What is your routine if the clinical suspicion is LD but the urine antigen test is negative? (n = 44)Sample for analysis with another method (culture, PCR, serology)3989
Don’t know25
Other (free text)37
Do you try to confirm a positive PCR result with culture and isolation of BAL or sputum? (n = 31)Yes, always516
Yes, usually929
Rarely1032
No, never13
Don’t know619
Do you try to confirm a positive serology result with another diagnostic method? (n = 3)Yes, always00
Yes, usually00
Rarely133
No, never00
Don’t know267
Is a positive serology result confirmed with a new sample with regard to titre increase? (n = 3)Yes, always00
Yes, usually00
Rarely133
No, never00
Don’t know267
  1. Answers (n = 47) from a survey to doctors at Norwegian hospitals that notified at least one case with Legionnaires’ disease (LD) from 2013 to 2017