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
                                            Pantin Jackwood, Maryitem
                                            COSTA-HURTADO, MAR - US Department Of Agriculture (USDA)item
                                            Shepherd, Ericitem
                                            Smith, Dianeitem
                                            Spackman, Ericaitem
                                            Kapczynski, Darrellitem
                                            Suarez, Daviditem
                                            Swayne, David
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 1/10/2014
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Highly pathogenic avian influenza viruses (HPAIV’s) remain a threat to poultry worldwide.  Avian influenza viruses, including HPAIV, are usually non-pathogenic for ducks and other wild aquatic birds, with the exception of some Asian lineage H5N1 HPAIVs which can cause severe disease in ducks.  With the continuous occurrence of HPAI outbreaks in poultry it’s necessary to address the role of wild birds in the transmission and spreading of HPAIV’s.  We conducted a study in which we inoculated 2-weeks-old mallard ducks (Anas platyrhynchos) intranasally with 106 EID50 of one of eleven strains of HPAIV subtypes H5 or H7, including isolates from different years and countries.  Pathogenesis (clinical signs, lesions), presence of the viruses in tissues, duration and titer of virus shedding for each virus, transmission to contact birds, and seroconversion to all viruses was evaluated.  Although no clinical signs or mortality were observed, ducks became infected with most of the viruses given and transmitted the viruses to contacts.  Viral shedding occurred by both the oropharyngeal and cloacal routes indicating adaptation to poultry.  Viruses that had circulated for longer periods of time in poultry, like the Mexican H5N2 HPAIV, were less infectious for ducks.  These results raise concerns about possible spreading of HPAIV’s by infected wild ducks.


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