This issue of Clinics in Laboratory Medicine, edited by Drs. Nahed Ismail, A. William Pasculle, and James Snyder, will cover a wide variety of Emerging Pathogens. Topics covered in this issue include, but are not limited to West Nile Virus; Zika Virus; Ebola and Marburg Heamorrhagic Fever; Rift Valley Fever; Carbapenem Resistant Enterobacteriacae; Closteridium Difficuile; and Chikungunya, among others.