Vaccine Clinical Trial Recruitment

Vaccine studies operate under intense timelines and require fast, predictable engagement from diverse patient populations. Whether focused on influenza, RSV, COVID-19, pneumococcal, shingles, HPV, or maternal and pediatric immunization research, vaccine trials depend on participant motivation, trust, and clear understanding of study participation.

Challenges include:

Compressed enrollment windows tied to seasonal patterns or outbreak conditions.
Public hesitancy and misinformation that limit interest and trust.
Follow-up expectations (e.g., day-7 or day-28 symptom reporting) that can deter participation.
Varied eligibility across adult, pediatric, adolescent, and maternal cohorts.

For sponsors, CROs, and research sites, these factors often create enrollment slowdowns without a recruitment partner who understands the landscape of vaccine research and can reach high-intent individuals efficiently.

OmniCRS brings significant reach and experience to vaccine-related recruitment efforts. With 832,067+ engaged patients and demonstrated performance across 35+ therapeutic areas, including high-volume interest categories, OmniCRS helps sponsors and CROs quickly connect with individuals who are motivated to learn about research participation.

OmniCRS accelerates vaccine enrollment with performance marketing and compliant patient outreach

As a recruitment-only partner, OmniCRS focuses on:

Our campaign strategies center on clarity, compliance, inclusivity, and scale—helping vaccine studies begin enrollment on stronger footing.

Our Impact in Vaccine Recruitment

With more than 832,000 engaged patients, 35+ therapeutic areas, and the proven scalability to deliver thousands of leads per study when needed, OmniCRS brings unmatched reach and consistency to vaccine programs.

Strong engagement across vaccine-related audiences

supported by  OmniCRS’ performance marketing engine and multi-channel reach

High-volume recruitment experience

reflected across major therapeutic areas,  with demonstrated ability to generate thousands of leads per study when required

Consistent, scalable recruitment pipelines

that give sponsors and CROs confidence in early enrollment flow

How We Deliver Exceptional Vaccine Recruitment

OmniCRS’ model is built to improve the quality and predictability of referrals for dermatology trials—while staying compliant, focused, and within our recruitment scope.

Audience alignment across demographic and study needs: Vaccine trials often require outreach to specific cohorts—adult, adolescent, pediatric, or maternal. Our campaigns reflect those needs through interest-aligned targeting and IRB-approved language, helping attract individuals who recognize themselves in the study description.
Performance-driven outreach: OmniCRS reaches adults, parents, caregivers, and eligible individuals across diverse digital environments. Messaging is crafted to resonate with people exploring research opportunities, supporting engagement while maintaining strict compliance standards.
Inclusive, multilingual recruitment strategies: Because vaccine research benefits from broad representation, OmniCRS uses culturally aligned creative and multilingual messaging to engage communities historically underrepresented in immunization research.

Proprietary fraud-prevention

HIPAA / GDPR / FDA compliance

Continuous quality monitoring

Results That Move Vaccine Trials Forward

OmniCRS supports vaccine-related studies by giving sponsors and CROs access to scalable, compliant recruitment designed for maximum engagement. Our approach reaches individuals motivated to enroll in research opportunities, builds sustained interest across seasonal and platform programs, and improves participant understanding of study expectations through IRB-approved messaging.

Partner With OmniCRS to Advance Your Vaccine Program

Accelerate your vaccine trial with a stronger referral pipeline