Even widely used vaccines leave measurable gaps waning immunity over time, inconsistent protection across populations, and formulations that struggle to keep pace with rapidly mutating pathogens.

Vaccine clinical trials exist to close those gaps through immunogenicity studies that measure not just whether protection is generated, but how strong, how broad, and how durable it actually is. At Zillan Clinical Research, we conduct vaccine clinical studies in Los Angeles, CA in partnership with leading pharmaceutical and biotechnology companies, currently enrolling participants for trials evaluating next-generation formulations. See our active vaccine studies below.