The Latest on HPAI:

January 31, 2023:  2022-2023 Detections of Highly Pathogenic Avian Influenza in Wild Birds

October 10, 2022:  Delaware Emergency Order Allows Fall Staging of Poultry Litter to Help Reduce HPAI Risk

July 8, 2022:  HPAI 2022 Confirmed Detections

May 11, 2022:  High Path Avian Influenza Confirmed in Black Vultures, Poultry Producers Encouraged to Take Precautions

HPAI 5.30.23 Detections Map

'HPAI Q & A' Zoom Discussion 

Notes from the HPAI Zoom Discussion in PDF 

Recording on Panopto of the HPAI Zoom Discussion  


Avian Influenza Warning Discussion

Held Feb. 25, on Zoom, Dr. Nathaniel Tablante, DVM, and Extension Poultry Health Specialist, discussed what it is, where it is, how to protect your flock, commercial or backyard.  See below for full video, pdf slides, and the links for commercial and small flock in Notes.

Dr. Tablante's pdf slides:  Avian Influenza: What You Need to Know, Not Fear

The recording:

NOTESAvian Influenza Warning Discussion, February 25, 2022


Disinfection in On-Farm Biosecurity Procedures

Revised by Dr. Gustavo M. Schuenemann, D.V.M., Associate Professor, Extension Veterinarian, Dairy, Department of Preventive Medicine, College of Veterinary Medicine  Original authors: Dr. Gary L. Bowman and Dr. William P. Shulaw

Since the appearance of recent swine and avian influenza outbreaks in the United States as well as foot-and-mouth disease (FMD) in Europe in early 2001 has caused many livestock owners serious concern; many are continuing to look more closely at their biosecurity plans or their efforts to keep the diseases out of their herds or flocks. Over the years, Extension veterinarians have received many calls regarding which disinfectants to use on shoes, boots, tires or other equipment in order to kill the FMD or influenza virus. A few important points about disinfection should be made before choosing a disinfectant for routine farm use.  

First, most disinfectants won’t work if the surface to be disinfected isn’t clean (presence of organic matter such as dirt or manure) before applying the disinfectant.

Steam and high-pressure washers can be very useful to clean porous surfaces. Organic materials such as soil, plant debris (like straw), milk, blood, pus and manure often inactivate some disinfectants or protect germs from the disinfectant’s active ingredients. Chlorine-based disinfectants are especially subject to this problem. Chlorine, the active ingredient in bleach, is relatively quickly inactivated by organic debris such as manure, and even milk, at the concentrations usually used on clean surfaces.  Read more>>


Useful Resources on Avian Influenza (A.I.):

Avian Influenza Biosecurity for Emergency Responders

U.S. Department of Agriculture:  Avian Influenza

HPAI Tactical Response Plan

USDA HPAI Biosecurity Checklist

For other helpful resources on AI, go to:

For current status of A.I. in Maryland, see the Bird Flu Blog at:

  and follow @MdBirdFlu on Twitter.   Also, see the Bird Flu Press Kit at: