Zoetis Inforce 3
By Zoetis
Last reviewed: January 2024
Inforce 3 is Zoetis's intranasal respiratory vaccine for cattle, providing rapid mucosal immunity against IBR, BRSV, and PI3 viruses. Administered as a 1 mL spr
What is Inforce 3?
Inforce 3 is a modified-live virus (MLV) intranasal vaccine containing:
Unlike injectable vaccines, Inforce 3 is sprayed directly into the nasal passage, stimulating local mucosal immunity where respiratory infections begin.
Intranasal Advantage
The intranasal route provides unique benefits:
Rapid Local Immunity: Protection develops at the respiratory mucosa within days
Maternal Antibody Override: Works even in calves with high colostral antibodies
Early Life Use: Licensed for calves as young as 1 week old
First-Line Defense: IgA antibodies at mucosa block viral entry
How Mucosal Immunity Works
When vaccine virus contacts nasal mucosa:
Young Calf Application
Inforce 3 is particularly valuable for dairy calf programs:
Key Features
- Intranasal Delivery: 1 mL spray into one nostril for complete dose
- Three-Way Viral Coverage: IBR, BRSV, PI3 protection
- Early Age Use: Licensed as early as 1 week of age
- Rapid Onset: Local immunity develops within days
- Maternal Antibody Compatible: Works despite passive antibodies
Advanced Features
- Mucosal IgA Response: Local antibodies at site of infection
- Modified-Live Potency: Strong, long-lasting immune memory
- Needle-Free Administration: No injection site reactions
- Stress Timing Flexibility: Can be given near stressful events
- Booster Flexibility: Single intranasal dose or boost with injectable later
Ideal For
Competitive Advantages
What sets Inforce 3 apart from alternatives:
- Inforce 3 advantages: 1. **Earliest Protection**: Can vaccinate from 1 week of age 2. **Maternal Antibody Solution**: Works when injectables are blocked 3. **Speed of Protection**: Faster onset than injectable vaccines 4. **No Injection Sites**: Important for replacement heifer programs 5. **Easy Administration**: Simple nasal spray application 6. **Proven Technology**: Established intranasal platform from Zoetis
Pricing Information
Here is the pricing information for Inforce 3:
Pros & Considerations
- Works in very young calves (1 week+)
- Overcomes maternal antibody interference
- Rapid local immunity development
- No injection sites
- Easy to administer
- Establishes mucosal immunity at infection site
- Does not include BVD (need injectable for complete coverage)
- Must use within 1 hour of reconstitution
- Some calves resist nasal restraint
- Sneezing can aerosolize vaccine (avoid in sick calves)
- Storage at 2-7°C required
Implementation & Setup
How to implement Inforce 3 on your dairy operation:
Training & Support
Training and support options available for Inforce 3:
Evaluation Questions
Key questions to consider when evaluating Inforce 3:
- 1. At what age are we currently vaccinating calves for respiratory disease? 2. What is our pre-weaning respiratory disease incidence? 3. Are we seeing vaccine failures potentially due to maternal antibody interference? 4. What respiratory viruses are causing disease (diagnostic history)? 5. Can we incorporate intranasal vaccination into calf processing workflow? 6. Are replacement heifers having injection site reactions affecting value? 7. What is the current cost per calf for respiratory vaccination?