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**AWARDS ISSUED PRIOR TO JANUARY 20, 2025, WERE FUNDED UNDER PREVIOUS ADMINISTRATIONS AND MAY NOT REFLECT THE PRIORITIES AND POLICIES OF THE CURRENT ADMINISTRATION.** INFLUENZA IS ARGUABLY ONE OF THE MOST SIGNIFICANT DISEASES IN PIGS. BECAUSE VIRUS REASSORTMENT IS CENTRAL TO THE EMERGENCE OF NOVEL STRAINS DIFFICULT TO CONTROL AND CAUSE DISEASE IN PIGS AND PEOPLE, WE WILL INVESTIGATE FACTORS AT THE FARM LEVEL THAT DRIVE THE EMERGENCE OF NOVEL REASSORTANTS. WE HYPOTHESIZE THAT REASSORTMENT OF INFLUENZA IS A COMMON EVENT AND THAT THERE ARE FACTORS RELATED TO AGE, IMMUNITY AND PRODUCTION TYPE SYSTEM THAT DRIVE THE EMERGENCE OF REASSORTANT VIRUSES CAPABLE TO TRANSMIT AND CAUSE DISEASE. WE WILL FIRST IDENTIFY AND CHARACTERIZE INFLUENZA REASSORTANT VIRUSES IN INDIVIDUAL PIGS AND FARMS, AND THEN WE WILL EVALUATE WHETHER CERTAIN POPULATIONS OF PIGS, AND PRESENCE OF IMMUNITY (OR LACK OF) ARE RESPONSIBLE FOR THE EMERGENCE OF THE REASSORTANTS. WE EXPECT TO IDENTIFY AND QUANTIFY THE EXTENT OF REASSORTMENT HAPPENING IN THE PIGS AND DOCUMENT THAT YOUNG POPULATIONS THAT LACK PROTECTIVE IMMUNITY ARE LARGELY RESPONSIBLE FOR THE EMERGENCE OF REASSORTANT VIRUSES. ULTIMATELY, WE ANTICIPATE THAT WORK DERIVED FROM THIS STUDY WILL RESULT IN CHANGES IN MANAGEMENT PRACTICES AND VACCINATION PROTOCOLS THAT WILL HELP REDUCE THE EMERGENCE OF NOVEL REASSORTANTS IN PIGS RESULTING IN LESS ECONOMIC LOSSES TO PRODUCERS AND DECREASED RISK OF TRANSMISSION TO PEOPLE.

$500,000FY2022National Institute of Food and AgricultureUSDA

Regents Of The University Of Minnesota

Investigators

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**AWARDS ISSUED PRIOR TO JANUARY 20, 2025, WERE FUNDED UNDER PREVIOUS ADMINISTRATIONS AND MAY NOT REFLECT THE PRIORITIES AND POLICIES OF THE CURRENT ADMINISTRATION.** INFLUENZA IS ARGUABLY ONE OF THE MOST SIGNIFICANT DISEASES IN PIGS. BECAUSE VIRUS REASSORTMENT IS CENTRAL TO THE EMERGENCE OF NOVEL STRAINS DIFFICULT TO CONTROL AND CAUSE DISEASE IN PIGS AND PEOPLE, WE WILL INVESTIGATE FACTORS AT THE FARM LEVEL THAT DRIVE THE EMERGENCE OF NOVEL REASSORTANTS. WE HYPOTHESIZE THAT REASSORTMENT OF INFLUENZA IS A COMMON EVENT AND THAT THERE ARE FACTORS RELATED TO AGE, IMMUNITY AND PRODUCTION TYPE SYSTEM THAT DRIVE THE EMERGENCE OF REASSORTANT VIRUSES CAPABLE TO TRANSMIT AND CAUSE DISEASE. WE WILL FIRST IDENTIFY AND CHARACTERIZE INFLUENZA REASSORTANT VIRUSES IN INDIVIDUAL PIGS AND FARMS, AND THEN WE WILL EVALUATE WHETHER CERTAIN POPULATIONS OF PIGS, AND PRESENCE OF IMMUNITY (OR LACK OF) ARE RESPONSIBLE FOR THE EMERGENCE OF THE REASSORTANTS. WE EXPECT TO IDENTIFY AND QUANTIFY THE EXTENT OF REASSORTMENT HAPPENING IN THE PIGS AND DOCUMENT THAT YOUNG POPULATIONS THAT LACK PROTECTIVE IMMUNITY ARE LARGELY RESPONSIBLE FOR THE EMERGENCE OF REASSORTANT VIRUSES. ULTIMATELY, WE ANTICIPATE THAT WORK DERIVED FROM THIS STUDY WILL RESULT IN CHANGES IN MANAGEMENT PRACTICES AND VACCINATION PROTOCOLS THAT WILL HELP REDUCE THE EMERGENCE OF NOVEL REASSORTANTS IN PIGS RESULTING IN LESS ECONOMIC LOSSES TO PRODUCERS AND DECREASED RISK OF TRANSMISSION TO PEOPLE. · GrantIndex