{Reference Type}: Case Reports
{Title}: Legionellosis acquired through a dental unit: a case study.
{Author}: Schönning C;Jernberg C;Klingenberg D;Andersson S;Pääjärvi A;Alm E;Tano E;Lytsy B;
{Journal}: J Hosp Infect
{Volume}: 96
{Issue}: 1
{Year}: May 2017
{Factor}: 8.944
{DOI}: 10.1016/j.jhin.2017.01.009
{Abstract}: In 2012, an elderly immunocompromised man died from legionellosis at a hospital in Uppsala, Sweden. The patient had visited a dental ward at the hospital during the incubation period. Legionella spp. at a concentration of 2000 colony-forming units/L were isolated from the cupfiller outlet providing water for oral rinsing. Isolates from the patient and the dental unit were Legionella pneumophila serogroup 1, subgroup Knoxville and ST9. Pulsed-field gel electrophoresis and whole-genome sequencing strongly suggested that the isolates were of common origin. This report presents one of few documented cases of legionellosis acquired through a dental unit.