U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Exotic & Emerging Avian Viral Diseases Research: Athens, GA
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    USNPRC
                        Richard B Russell Center
                                    Southeast Poultry Research Center
                                    Return to USNPRC home page
                    Research Units at USNPRC
                        Quality and Safety Assessment Research
                                    Poultry Microbiological Safety and Processing Research
                                    Toxicology and Mycotoxin Research
                                    Egg and Poultry Production Safety Research Unit
                                    Exotic and Emerging Avian Viral Diseases
                                    Endemic Poultry Viral Diseases Research
                                    Avian Diseases and Oncology Research
                                    Return to USNPRC home pageSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Athens, Georgia U.S. National Poultry Research Center Exotic & Emerging Avian Viral Diseases Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            COSTA-HURTADO, MAR - Orise Fellowitem
                                            DEJESUS, ERIC - Orise Fellowitem
                                            Smith, Dianeitem
                                            Spackman, Ericaitem
                                            Kapczynski, Darrellitem
                                            Suarez, Daviditem
                                            Swayne, Daviditem
                                            Pantin Jackwood, Mary
  Submitted to: International Poultry Scientific Forum
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 12/10/2015
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Domestic ducks and geese are common backyard poultry in many countries, frequently in contact with wild waterfowl, which are natural reservoirs of avian influenza viruses and have played a key role in the spread of Asian-lineage H5N1 highly pathogenic avian influenza (HPAI).  In late 2014, a reassortant H5N8 clade 2.3.4.4 HPAI virus spread by migratory birds into Europe and North America, and mixed with North American low pathogenicity AI viruses to produce an H5N2 HPAI virus.  These viruses spread through the United States causing outbreaks in poultry in 2015.  To evaluate the infectivity, transmissibility, and pathogenicity of these H5 HPAI viruses in domestic waterfowl, two-week-old Pekin ducks and Chinese geese were inoculated with the two index viruses: A/Northern Pintail/Washington/40964/2014 H5N2 and A/Gyrfalcon/Washington/40188-6/2014 H5N8.  Oropharyngeal and cloacal swabs were collected from inoculated and contact birds at 2, 4, 7, and 10-11 days post-inoculation (dpi) to determine virus shedding.  None of the inoculated or contact Pekin ducks showed clinical signs, but a few of the geese presented neurological signs and died.  Pekin ducks also shed lower titers of viruses and for a shorter period of time than the geese.  Pekin ducks became infected and transmitted the viruses to contacts when inoculated with high virus doses: 10^4 and 10^6 mean embryo infective dose (EID50), but not with a lower dose (10^2 EID50).  All geese inoculated with H5N8 HPAI virus became infected and transmitted the virus to contacts regardless of the inoculation dose.  Only geese inoculated with the higher doses of H5N2 HPAI virus and their contact birds became infected, indicating differences between the two index viruses.  The peak of virus shedding for both viruses, in geese and ducks, was at 4 days post inoculation (dpi).  In conclusion, the novel HPAIV H5 viruses can infect domestic waterfowl and easily transmit to contact birds, with geese being more susceptible to infection than ducks.  The disease is mostly asymptomatic, but infected birds shed virus for several days, representing a risk to other poultry species.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov