PV Bulletin

FDA Issues Emergency Use Authorization for Bimectin Injection to Prevent New World Screwworm in Cattle

The FDA has authorized Bimectin (ivermectin) injection for use in cattle to prevent New World screwworm infestations.

Primary source: Letter of Authorization: Bimectin injection (EUA 006729)

PV Impact Brief

Urgency: HighConfidence: high

What changed

Emergency Use Authorization for Bimectin (ivermectin) injection is now in effect, allowing its use in cattle to prevent New World screwworm infestations under specific conditions.

Why it matters

The EUA expands treatment options for preventing a significant agricultural challenge with New World screwworms, ensuring that cattle producers have access to effective interventions while emphasizing safety standards.

Action needed

Cattle producers must administer Bimectin injection within specified timelines (24 hours post-birth, at castration, or on wound appearance) and observe a 35-day withdrawal period before slaughter to prevent drug residues in food.

Relevant for
Regulatory Intelligence Lead
Processes impacted
Signal Management
Owner

Regulatory Intelligence Lead

Review cadence

Review in the next regulatory intelligence cycle.

Evidence and confidence

Confidence: highSource updated: Aug 27, 2026

Full briefing

Practical implication

Cattle producers must administer Bimectin injection within specified timelines (24 hours post-birth, at castration, or on wound appearance) and observe a 35-day withdrawal period before slaughter to prevent drug residues in food.

The FDA issued an Emergency Use Authorization (EUA) for Bimectin (ivermectin) injection for preventing New World screwworm infestations in cattle when administered within 24 hours of birth, at the time of castration, or at the appearance of a wound. It is not authorized for use in lactating dairy cows or calves processed for veal, and must be used following strict guidelines to ensure safety and effectiveness.

What changed: Emergency Use Authorization for Bimectin (ivermectin) injection is now in effect, allowing its use in cattle to prevent New World screwworm infestations under specific conditions.

Why it matters: The EUA expands treatment options for preventing a significant agricultural challenge with New World screwworms, ensuring that cattle producers have access to effective interventions while emphasizing safety standards.

Practical implication: Cattle producers must administer Bimectin injection within specified timelines (24 hours post-birth, at castration, or on wound appearance) and observe a 35-day withdrawal period before slaughter to prevent drug residues in food.

View original source

  • Source: FDA - Latest Press Announcements
  • Published at source: 2026-08-27T04:00:00.000Z
  • Discovered by monitor: 2026-08-27T22:04:57.359Z

Published from the regulator source ingestion pipeline after PV impact triage.

#Safety Signals#Reporting Requirement#Source-ingestion#Regulator-monitor#Usa#Fda.gov

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