This figure shows the seasonal pattern of legionellosis, Legionella pneumophila and Legionella longbeachae by month of year from 2008 to 2013. In 2013, the diagnosis of Legionella pneumophila and Legionella longbeachae peaked in Winter, with 70 Legionella pneumophila cases and 71 Legionella longbeachae cases notified in June, July and August.