Infectious Bronchitis Vaccine

Infectious Bronchitis Vaccine Description

This live bivalent vaccine is formulated with two widely used infectious bronchitis virus (IBV) strains: H120 (Mass-type) and 4/91 (variant strain), providing broad-spectrum protection against both classical and emerging IBV strains.

Infectious bronchitis is a highly contagious viral disease affecting the respiratory, renal, and reproductive systems of chickens. It leads to decreased growth performance, poor feed conversion, and significant losses in egg production and quality.

The combination of H120 and 4/91 strains enables cross-protection against diverse IBV serotypes, making this vaccine particularly effective in regions where multiple variants are circulating.

Following vaccination, immunity develops rapidly within 5–8 days, making it suitable for early-stage protection in chicks. Due to the relatively short duration of immunity (approximately 2 months), booster vaccination is required to maintain effective protection throughout the production cycle.

This vaccine is ideal for broiler, layer, and breeder operations, especially in intensive poultry production systems.

Immunization Program

• Primary Vaccination:
  • Day-old chicks (nasal/ocular route)
• Booster Vaccination:
  • At 1–2 months of age
• Can be integrated into comprehensive poultry vaccination schedules

Dosage & Administration

Dilute according to label instructions using sterile saline, water for injection, or cooled boiled water

Administration methods:

• Nasal / Eye Drops:
  • 1 drop (~0.03 mL) per chick
• Drinking Water Vaccination:
  • Double dose required
  • Water volume adjusted based on age:
    • 5–10 mL per chick (5–10 days old guideline)

Composition

• Infectious bronchitis virus (H120 strain): ≥ 10^3.5 EID₅₀
• Infectious bronchitis virus (4/91 strain): ≥ 10^3.5 EID₅₀

Product Characteristics

• Appearance: Spongy loose mass
• Rapid dissolution after dilution
• Suitable for mass vaccination methods

Safety & Precautions

• Use freshly prepared vaccine only
• After dilution:
  • Store in cool, dark conditions
  • Use within 4 hours
• For drinking water vaccination:
  • Avoid metal containers
  • Use clean, chlorine-free water
  • Withhold water for 2–4 hours before vaccination
• Dispose of:
  • Vaccine vials
  • Equipment
  • Residual vaccine according to biosafety regulations

Packaging & Specification

Specifications:

• 1000 doses/vial
• 2000 doses/vial

• Packaging: 10 vials/box

Storage & Shelf Life

• Storage: 2–8°C
• Protect from light
• Shelf Life: 24 months