Drugs & FDA The Screwworm America Eradicated With Sterile Flies Is Back, and This Time Washington Also Reached for an Emergency-Authorized Chemical
Dicyclanil, an Australian sheep-blowfly chemical with mouse liver tumors in its toxicology file, is now cleared for cattle, swine, goats and wildlife under section 564, the same emergency-use power heavily used for pandemic countermeasures.
By Marcus Chen · August 17, 2026