NJDOH COVID Phase 4 Case Study — Princeton Partners
Healthcare
New Jersey Department of Health logo
How "Other People Are Gross" Became New Jersey's Most Effective Public Health Message.
NJ Department of Health · COVID Phase 4 Booster Campaign

By 2024, booster uptake had dropped to roughly 27%, even as COVID remained a top-five cause of death. Research revealed a 62% "moveable middle" — residents who intended to get boosted or leaned favorable but hadn't acted. They didn't need convincing. They needed a nudge.

65% Increase in Likelihood to Get Vaccinated Within 2 Months
Following Phase 1: 4.7M Vaccinations, 12 Days Early
The Challenge
The Insight
The Solution
The Work
The Results
01 · The Challenge

A 62% "moveable middle."

Princeton Partners had led the largest public health initiative in New Jersey history, helping the state reach 4.7 million COVID-19 vaccinations. But by 2024, booster uptake had dropped to roughly 27%, even as COVID remained a top-five cause of death.

ClientNJ Department of Health
VerticalHealthcare
Campaign EraPhase 4 · Booster Uptake
Booster Uptake, 2024~27%
Resistant
Moveable Middle — 62%
Vaccinated
62% intended to get boosted or leaned favorable, but hadn't acted.
02 · The Insight

They didn't need convincing. They needed a nudge.

Resistance
The Real Barrier ↓
Simple Inertia
03 · The Solution

Two directions. One behavior.

That finding shaped two campaign directions, each designed for behavior change from a different angle — both converging on a single behavioral mechanism.

"Healthier"

Reframed vaccines as part of overall wellness, not a response to crisis — something that makes everything you already do a little healthier.

"Get vaccinated for healthier family time."
"Think About Others"

A fresh, visceral, and humorous approach. You might take precautions — but other people maybe aren't. A reminder COVID is still circulating close by.

Striking close-in visuals, wry attitude.
↓ ↓
The Convergent Mechanism
"Set a Date"
13 Channels
9 Languages
9 Community Ambassadors
36 Neighborhoods
Barbershops, Salons & Coffee Shops
04 · The Work

The Creative.

NJDOH Coughcaphony :30
NJDOH Coughcaphony :30
Video
NJDOH OOH Billboard
NJDOH OOH Billboard
Out of Home
NJDOH OOH Print
NJDOH OOH Print
Print
NJDOH Covid-19 Banner Ad
NJDOH Covid-19 Banner Ad
Digital Display
05 · The Results

Awareness, turned into intent.

The campaign delivered outsized reach and lift across every measure — from statewide impressions down to community events in barbershops, salons, and coffee shops across 36 neighborhoods.

The Results, Itemized

From awareness to appointments.

NEW JERSEY · BOOSTER CAMPAIGN
Live
Impressions Statewide~661M
YouTube Ad Recall Lift+27.1%
Relative Brand Lift+9.9%
CTV Brand-Intent Lift5x Category Avg
Near-Term Vaccination Intent+65%
Community Members Engaged45,000+