Vaccine clinical trials at UC Davis

4 research studies open to eligible people

Showing trials for

  • Immunosuppression Adjustment on COVID-19 Vaccination Response in Kidney Transplant Recipients

    open to eligible people ages 18 years and up

    Immunocompromised individuals, such as solid organ transplant (SOT) recipients are at high risk of COVID-19 associated complications and mortality. Retrospective studies so far have shown that a majority of SOT recipients did not develop appreciable anti-spike antibody response after a first, second, or even third dose of mRNA vaccine. Treatment with antimetabolites was associated with poor vaccine response. The goal of this study is 1) examine whether transient immunosuppression reduction improves the immune response to a third dose of SARS-CoV-2 mRNA vaccine in kidney transplant recipients and 2) to assess the safety of immunosuppression reduction before and after third dose SARS-CoV-2 mRNA vaccination.

    Sacramento, California

  • RSVpreF in Infants Born to Women Vaccinated During Pregnancy.

    “Pass on what's important: You’ll give them love in lots of ways. Could protection from RSV be one of them?”

    open to eligible females ages 0-49

    This randomized, double-blinded, placebo-controlled Phase 3 study is designed to evaluate the efficacy and safety of maternal immunization with RSVpreF against medically attended lower respiratory tract illness (MA-LRTI) in infants.

    Palo Alto, California and other locations

  • Immunologic Response to Pneumococcal Polysaccharide Vaccine in Splenic Injury Patients

    “How effective is vaccination in those who have sustained an injury to their spleen or undergone a surgical procedure to remove their spleen?”

    open to eligible people ages 18-65

    Persons without a spleen are susceptible to potentially lethal infections from certain bacteria, with pneumococcus being the most prevalent. Vaccines are provided to help protect against these infections, though they do not so with certainty. Trauma patients who sustain an injury to their spleen currently have three treatment options available for the treating surgeon - nonoperative management, embolization, or removal of the spleen. The purpose of this study is to investigate the antibody response to pneumococcal vaccine in patients undergoing these modes of therapy.

    Sacramento, California

  • WHNRC (Western Human Nutrition Research Center) Fiber Intervention Study

    open to eligible people ages 18-50

    The purpose of this study is to determine if adding dietary fiber, such as inulin, to a diet that does not have enough fiber would raise the levels of potentially beneficial bacteria, such as Bifidobacterium, in the gut. There is evidence to suggest that these microbes can affect gut health and immune response, including to vaccines. The investigators will examine how inulin in the diet (compared to the maltodextrin control) (1) causes changes in the composition and function of the gut microbes, (2) reduces gut inflammation and gut leakiness caused by the vaccine, (3) increases immune response to vaccination, and (4) changes the expression of important adhesion molecules on the surface of white blood cells. Intestinal and whole-body responses will be measured in all participants.

    Davis, California

Our lead scientists for Vaccine research studies include .