eng Science and Education Publishing American Journal of Medical Case Reports 2374-216X 2019-07-14 7 9 191 192 10.12691/ajmcr-7-9-2 AJMCR2019792 article Mohamed Saad Eldin msaadeld@conemaugh.org 1 Sadaquat Liaqat 1 Khaled Awad 1 Salah Aldergash 1 Department of Internal Medicine, Conemaugh Memorial Medical Center, Johnstown, PA, USA Lactobacilli are normal commensal bacteria of human. They can cause fatal infections in an immunocompromised host. We present a case of an immunocompromised patient with stage IV non-small cell lung cancer receiving Nivolumab who had high grade lactobacillus bacteremia and fungal blood stream infection. http://pubs.sciepub.com/ajmcr/7/9/2/ajmcr-7-9-2.pdf lactobacilli Nivolumab lactobacillus acidophilus