NAHLN Response Guidance

Last Modified: July 30, 2025
farm pasture with red barn in foreground

NAHLN provides investigational and surveillance testing for high-consequence agricultural pathogens. Browse and download NAHLN response guidance documents below.

Highly Pathogenic Avian Influenza in Livestock

Testing Guidance

(PDF, 291.91 KB)

Testing Guidance for Labs for Influenza A in Livestock
Results Reporting Guidance

(PDF, 231.79 KB)

HPAI Outbreak and Livestock Electronic Results Messaging Policy Guidance
APHIS Frequently Asked Questions

(PDF, 290.44 KB)

Find answers to some of the most frequently asked questions about this rapidly evolving situation.
NAHLN Frequently Asked Questions

(PDF, 290.44 KB)

This document answers some of the most frequently asked questions by members of the National Animal Health Laboratory Network.

All Diseases

FMD/SVA Swine Vesicular Testing Guidance

(PDF, 190.61 KB)

August 2023
NAHLN Sustained Laboratory Capacity

(PDF, 180.63 KB)

October 2024
FAD Communications and NAHLN Laboratory Activation

(PDF, 179.19 KB)

December 2023
Poultry – HPAI Outbreak and FADi Electronic Results Messaging Policy Guidance

(PDF, 185.72 KB)

 August 2024
Poultry – Foreign Animal Disease (FAD) Investigation Guidance – HPAI

(PDF, 184.83 KB)

April 2022
Poultry – BSL2 Enhanced for Agricultural Emergencies Guidance

(PDF, 182.5 KB)

April 2022
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