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Table 3 Legionellosis cases and colonisation with Legionella MAb 3/1 positive strains

From: Virulence of Legionella pneumophila strains isolated from hospital water system and healthcare-associated Legionnaires’ disease in Northern Italy between 2004 and 2009

  HCFs with reported cases HCFs without reported cases Total
HCFs colonised with L. pneumophila sg 1 MAb 3/1 positive 7 1 8
HCFs colonised with L. pneumophila sg 1 MAb 3/1 negative 4 14 18
Total 11 15 26
  1. p = 0.003 according to Fisher’s exact test.