Several cases have been reported every year ranging in location from the Balkans, to the Middle East, to Southern Africa. The virus is primarily transmitted by a tick (the hyalomma tick). It is in the family of ARBOviruses (ARthropod-BOrne) like Zika and Dengue fever.
3 – Leptospirosis has come and gone in the Bronx – a rare, sometimes fatal disease has killed one and sickened two others early in 2017. The disease, caused by bacteria transmitted in rat urine, is a blood-borne pathogen and can lead to flu-like symptoms. Forbes summarized this outbreak (defined by the short time and physical proximity of cases, as you all remember) here: https://www.forbes.com/sites/robertglatter/2017/02/16/leptospirosis-reported-in-new-york-city-what-you-need-to-know/#62bea01e21b7
And more impressive images from his lab here: http://www.nytimes.com/slideshow/2008/10/27/science/102808-Cough_index.html