ARSD and legionellosis: However, the European Working Group for Legionella Infections (EWGLI), recently renamed European Study Group for Legionella Infections (ESGLI), developed a standardized procedure for the molecular typing of Lp, based on the amplification and sequencing of seven genes (flaA, pilE, asd, mip, mompS, proA, and neuA), establishing as such their Sequence-based Type (SBT) [5].