NAHLN Response Guidance

Last Modified: December 24, 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
NAHLN Sustained Laboratory Capacity
FAD Communications and NAHLN Laboratory Activation
Poultry – HPAI Outbreak and FADi Electronic Results Messaging Policy Guidance
Poultry – Foreign Animal Disease (FAD) Investigation Guidance – HPAI
Poultry – BSL2 Enhanced for Agricultural Emergencies Guidance
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