A 58 years old male who was admitted to the intensive care unit for septic shock secondary to pneumonia, he has Crohn's disease currently treated with Vedolizumab and previously with infliximab. He was started on broad spectrum antibiotics and vasopressors for treatment of septic shock without improvement in the following days, sputum & blood cultures were negative. Bronchoscopy was done for non-resolving pneumonia work up, broncheoalveolar lavage smears and cultures were negative for bacteria, tuberculosis and Fungi. Bronchial washings cytology showed filariform larvae and serology was positive for Strongyloides, He was started on ivermectin and his condition improved significantly.