Disclosed, not promised: a Federal Register notice published June 18, 2026 announces that the Food and Drug Administration has issued two Emergency Use Authorizations (EUAs) under the Federal Food, Drug, and Cosmetic Act for animal products aimed at the New World screwworm. The notice — document number 2026-12245, an FDA notice carrying the title "Authorization of Emergency Use for Two Animal Drugs for the Prevention and Treatment of New World Screwworm; Availability" — states that the Authorizations are reprinted in the document and include the agency's stated reasons for issuance. The two authorizations were issued in response to separate requests from two named entities: Health and Hygiene (Pty) Ltd. and Elanco US Inc.

The terms, per the notice, define each EUA by the animals it covers. The first authorization, requested by Health and Hygiene (Pty) Ltd., addresses infestations caused by New World screwworm (Cochliomyia hominivorax) larvae — a condition the notice refers to as myiasis — in a defined list of animals. The second, requested by Elanco US Inc., covers a different list. The notice sets out the first scope in the agency's own words.

"FDA has issued one EUA for an animal product as requested by Health and Hygiene (Pty) Ltd. for the prevention and treatment of infestations caused by New World screwworm (Cochliomyia hominivorax) (NWS) larvae (myiasis) in cattle, horses, minor species of hoof stock, raptors and other wild birds, pet birds, and captive wild, exotic, and zoo mammals."— Federal Register notice (FDA), document 2026-12245, source

The two authorizations and who requested them

Per the notice, the Elanco US Inc. authorization covers infestations caused by NWS larvae in cattle, swine, goats, sheep, horses, donkeys, domestic hybrid equids, and captive wild, exotic, and zoo mammals. Read alongside the Health and Hygiene scope quoted above, the two EUAs together name an overlapping but distinct set of species — the Health and Hygiene authorization extends to raptors and other wild birds and pet birds, while the Elanco authorization names swine, goats, sheep, donkeys, and domestic hybrid equids. The notice describes both as covering "the prevention and treatment of infestations," not treatment alone. It also states that the Authorizations "contain, among other things, conditions on the emergency use of the authorized products," without those conditions being reproduced in the abstract.

An Emergency Use Authorization is the mechanism by which FDA can authorize use of a product that is not otherwise approved, cleared, or licensed, during a declared emergency, subject to conditions the agency sets. Here the authorized products are animal drugs, and the notice frames the action as an availability announcement: it is telling the public that the EUAs have been issued and are reprinted in the document, including the agency's explanation of its reasons.

The declaration behind the authorizations

The notice ties both EUAs to a specific chain of government action in 2025. It states that the Authorizations follow an August 18, 2025 determination by the Secretary of Health and Human Services that there is a significant potential for a public health emergency involving New World screwworm — one the notice describes as having "a significant potential to affect national security or the health and security of U.S. citizens living abroad." On the basis of that determination, the notice says, the Secretary of HHS declared on the same date, August 18, 2025, that circumstances exist justifying the authorization of emergency use of animal drugs to treat or prevent NWS myiasis in animals. That declaration is the statutory predicate the FD&C Act requires before FDA can issue an EUA, and the June 18, 2026 notice is the agency acting on it for these two products.

New World screwworm is a parasitic fly whose larvae feed on the living tissue of warm-blooded hosts, the infestation the notice calls myiasis. The species lists in both EUAs span domestic livestock — cattle, swine, sheep, goats, horses — alongside captive wild, exotic, and zoo mammals, and, in the Health and Hygiene authorization, birds including raptors and pet birds. The notice does not, in the portion published as the abstract, name the active ingredients of the two animal products, state their dosing, or detail the conditions of authorized use; it states that those reasons and conditions are contained in the reprinted Authorizations within the full document.

What the record establishes

Strip the document to what it actually says and the load-bearing facts are these: FDA has issued two EUAs for animal drugs against New World screwworm; one was requested by Health and Hygiene (Pty) Ltd. and one by Elanco US Inc.; each covers a defined list of animal species for prevention and treatment of NWS myiasis; both follow the HHS Secretary's August 18, 2025 determination and same-day declaration; and the Authorizations carry conditions on emergency use that the notice says are set out in full in the reprinted text. The publication date of the Federal Register notice is June 18, 2026, and its document number is 2026-12245.

For anything past those points — the identity of the active ingredients, the specific conditions FDA attached, dosing, duration, or how the products are to be distributed — the canonical source is the full Federal Register document itself, linked above, which reprints both Authorizations and the agency's reasons. This report is confined to what the notice states. The notice does not make claims about the products' effectiveness beyond the prevention-and-treatment scope it authorizes, and it does not forecast the course of the screwworm situation; it records that the two EUAs have been issued and are available for public review.