1.	Optimizing Influenza Vaccination in Surgical Oncology Patients Phase: Phase IV Type: Health services research, Supportive care Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 240293, NCT01698177
2.	Study Comparing High-Dose Flu Vaccine to Standard Vaccine in Cancer Patients Less Than 65 Receiving Chemotherapy Phase: Phase II Type: Supportive care, Treatment Status: Active Age: 18 to 64 Sponsor: Pharmaceutical / Industry Protocol IDs: CIC 1336-B12-1, NCT01666782
3.	Ovarian Cancer and Immune Response to Flu Vaccine Phase: No phase specified Type: Supportive care Status: Active Age: 18 and over Sponsor: NCI, Other Protocol IDs: 805443, UPCC 5806 (N01-A1-50024), NCT00478387
4.	Cholecalciferol and Flu Vaccine in Treating Healthy Participants Phase: No phase specified Type: Biomarker/Laboratory analysis, Natural history/Epidemiology Status: Active Age: 18 to 64 Sponsor: NCI, Other Protocol IDs: I 203111, NCI-2011-03232, NCT01561989
5.	Response to Influenza Vaccine in Patients With Non-Hematologic Malignancies Receiving Chemotherapy Phase: No phase specified Type: Supportive care Status: Active Age: Over 18 Sponsor: NCI, Other Protocol IDs: 201010722, NCT01695733
6.	Response to Influenza Vaccination in Lymphoma Patients Treated With Rituximab Phase: No phase specified Type: Biomarker/Laboratory analysis, Supportive care Status: Active Age: 18 and over Sponsor: Other Protocol IDs: NL37320.100.11, NCT01707628