Infectious Diseases 2024

Infectious Diseases 2024

CDC confirms 2 human cases of HPAI in Washington

25 October, 2024

CDC officials said tests have confirmed H5 infection in two Washington poultry cullers, though the virus is the D.1.1 genotype, belongs to the 2.3.4.4b clade that is circulating globally in wild birds, which is different that the B3.13 genotype circulating in US dairy cattle. The workers were part of a team culling poultry in the wake of a large outbreak on a layer farm in Franklin County.

Human case summary during the 2024 outbreak, by state and exposure source

State

Cattle

Poultry

Unknown

State Total

California

15

0

0

15

Colorado

1

9

0

10

Michigan

2

0

0

2

Missouri

0

0

1

1

Texas

1

0

0

1

Washington

0

5

0

5

Source Total

19

14

1

34