Recruiting for clinical trials has always been challenging, but the landscape has changed. Modern studies — especially rapid‑response programmes and trials involving older adults or narrow patient populations — demand a level of agility and sophistication that traditional recruitment models simply cannot deliver.
Across the industry, sponsors face the same problem: how do you find the right participants quickly when the population is small, the criteria are tight, and the timelines are compressed? The answer isn’t a single tactic. It’s a recruitment engine built deliberately for complexity.
At hVIVO, that engine has been shaped by years of infectious‑disease work, refined through cardiometabolic programmes, and tested under the pressure of rapid‑response timelines. What makes it work is not one channel, but the way multiple channels operate together — continuously, flexibly, and with a level of integration that most organisations simply don’t have.
A recruitment model built for readiness
One of the quiet advantages hVIVO brings to complex studies is our ability to begin identifying participants via our generic screening protocol — reviewed and approved by regulators and ethics committees — allowing us to keep our recruitment active year‑round for patients and healthy volunteers and building a pool of potential participants. Once protocol‑specific approvals are received, we are able to quickly to cross check potential participants. We can advertise continuously, screen continuously, and maintain engagement with volunteers across age groups and disease areas.
This readiness isn’t theoretical. In a recent rapid response programme requiring a large cohort of older adults — a population that historically challenges even the most experienced sites — our recruitment engine delivered at speed and at scale. Within a matter of weeks, we identified and screened far more participants than originally projected, including a substantial number over the age of 65 and even several over 80. The study closed ahead of schedule, and our performance was strong enough that the sponsor asked us to support recruitment at additional sites beyond our own. That outcome wasn’t the result of a single tactic; it was the product of a recruitment system that is already in motion long before a protocol arrives.
Reaching populations others struggle to find
Older adults are one of the most challenging groups to recruit in clinical research. Historically, the industry has struggled with this population — not because they’re unwilling, but because the systems built to reach them aren’t designed for their needs. Digital‑only strategies rarely work. Generic advertising reaches the wrong people. And many sites rely on agencies that simply don’t specialise in older‑adult engagement.
hVIVO approaches this differently. Alongside our own database, we work with specialist recruitment partners who already operate within older‑adult communities — carers, care homes, disease‑specific networks. Their reach is targeted, their relationships are established, and their understanding of this demographic is deep. When combined with our own screening infrastructure, this creates a recruitment pathway that is both broad and precise.
The value of clinical relationships
Another part of the engine comes from our physician and GP network. These practices partner with us to provide direct referrals, pre‑screened patients, and trusted clinical relationships that are essential when inclusion criteria are narrow. We are now expanding this model further, establishing lead practices capable of coordinating searches across multiple clinics at once. It’s a way of turning fragmented clinical networks into a unified recruitment pathway — one that can be activated quickly and scaled as needed.
Human connection still matters
Not every population responds to digital outreach. For certain groups, especially older adults, trust is built through conversation. During recent programmes, hVIVO deployed field ambassadors — individuals who engage communities directly, answer questions, and help participants navigate the process. It’s a specialised role, and while still evolving, it has already shown how personal contact can open doors that technology alone cannot.
Layering, not relying
The strength of hVIVO’s recruitment engine isn’t the number of channels we have — it’s the judgement behind how we use them. Every study begins with a rapid assessment of who we need, how fast we need them, and which channels will deliver the highest‑quality participants with the least friction. Instead of activating everything at once, we activate the channels that will be most effective for that specific protocol, saving time, effort, and cost while maintaining speed. Experience tells us where the signal will be strongest, and we move there first.
It’s not just older adults — it’s people living with asthma, COPD, diabetes, and other respiratory‑related conditions who traditionally take far longer to identify and enrol. In one recent respiratory trial, we delivered 217 participants across multiple comorbidity groups in just seven weeks, demonstrating that targeted recruitment can be both fast and clinically precise. That capability is why sponsors increasingly come directly to hVIVO for recruitment support, even when we are not the primary CRO.
A model built for modern trials
Rapid‑response studies, emerging‑pathogen programmes, cardiometabolic trials, respiratory research — all of them share the same challenge: narrow populations, compressed timelines, and the need for precision. Recruitment is often the single biggest risk to timelines, and the industry’s traditional models are no longer enough.
hVIVO’s recruitment engine wasn’t built by accident. It is the result of deliberate design, continuous refinement, and real‑world testing across some of the most demanding studies in modern drug development. It is flexible, multichannel, clinically integrated, and built for speed.
For sponsors navigating urgent timelines or complex patient populations, this capability isn’t just helpful — it’s essential.
Recruitment has changed. The studies have changed. And the organisations that succeed will be those who have built engines capable of keeping pace.
hVIVO is already operating in that future.
