The continuing chicken flu outbreak in the US

23 July 2024

5 minute learn

The H5N1 chicken flu virus has unfold to dairy cows in the US, elevating considerations about its unfold to people.

Since 2022, chicken flu within the US has contaminated 168 dairy herds, 7 individuals who have been uncovered to poultry, 4 individuals who have been in shut contact with contaminated cattle, greater than 100 million chickens and over 9,500 wild birds.

The next is a timeline of the present outbreak within the nation:

July 19

The US Facilities for Illness Management and Prevention on Friday confirmed two further instances of chicken flu in Colorado poultry farm staff along with 4 beforehand confirmed human instances within the state this 12 months.

The well being company additionally mentioned preliminary outcomes from blood samples collected from 35 individuals who work in dairy farms in Michigan with contaminated herds didn’t present neutralizing antibodies particular to the H5N1 virus, a sign that the illness was not current in a wider group.

July 15

Oklahoma turned the thirteenth US state to detect chicken flu in dairy cows, the US Division of Agriculture confirmed.

July 2

The US authorities awarded $176 million to Moderna to advance growth of its chicken flu vaccine.

June 7

Wyoming turned the twelfth state to report an contaminated dairy herd.

June 6

Minnesota turned the eleventh state to report an contaminated dairy herd.

June 5

Chook flu outbreak in dairy cows expanded to a tenth state as Iowa reported its first an infection in a herd.

Might 30

A third US dairy employee examined constructive for chicken flu in 2024 after publicity to contaminated cows, and was the primary to undergo respiratory issues. The an infection was the second human case within the state of Michigan.

Might 22

One other human case of chicken flu is confirmed within the US with the an infection of a dairy employee in Michigan. It’s the second case in people this 12 months after the virus was detected in cattle.

April 26

Colorado turned the ninth US state to report an contaminated dairy herd.

April 25

Colombia restricted the import of beef and beef merchandise coming from US states on account of chicken flu in dairy cows.

April 24

The US authorities mentioned it would require dairy cattle transferring between states to be examined for chicken flu.

April 23

The US Meals and Drug administration mentioned it had discovered chicken flu virus particles in some samples of pasteurized milk, however mentioned the industrial milk provide stays secure on account of pasteurization.

April 11

South Dakota turned the eighth US state to search out avian influenza in a dairy herd, after the US Division of Agriculture (USDA) reported infections in North Carolina, Texas, Kansas, Ohio, Michigan, Idaho and New Mexico.

April 4

Chook flu dairy cow outbreak widened to a dairy herd in Ohio.

April 2

Mexico’s agriculture ministry mentioned it was taking preventative measures to extend surveillance and reinforce inspections of US livestock imports after chicken flu was present in dairy cattle there.

April 1

The second identified human case of chicken flu in the US is reported in an individual from Texas who had contact with dairy cows presumed to be contaminated with the virus.

The virus was detected in dairy cattle in New Mexico, Michigan and Idaho, together with Texas and Kansas.

March 25

The USDA mentioned samples of milk collected from sick cattle in Kansas and Texas examined constructive for avian flu, however the nation’s milk provide was secure.

Dec. 12, 2023

Egg producer Cal-Maine Meals mentioned it had quickly ceased manufacturing at a facility in Kansas after a number of the flock examined constructive for avian flu.

Nov. 3, 2023

Arkansas, a serious US rooster producer, reported its first outbreak of deadly avian flu in a industrial poultry flock in a 12 months.

Oct. 6, 2023

America detected its first case of avian flu on a industrial poultry farm since April, in a flock of 47,300 turkeys in Jerauld County, South Dakota.

April 14, 2023

The US authorities mentioned it was testing 4 potential chicken flu vaccines for poultry, after greater than 58 million chickens, turkeys and different birds had died within the nation’s worst outbreak ever.

March 20, 2023

A number of the world’s main makers of flu vaccines say they may make a whole lot of hundreds of thousands of chicken flu pictures for people inside months if a brand new pressure of avian influenza ever jumps throughout the species divide.

Oct. 7, 2022

Avian flu contaminated a industrial flock of breeding chickens in Arkansas, widening an outbreak of the illness within the southern area.

Nationwide, greater than 47 million birds have been killed by avian flu or culled to regulate its unfold this 12 months within the nation’s worst outbreak since a document 50 million birds have been worn out in 2015.

April 29, 2022

The first identified human case of H5N1 chicken flu in the US appeared in an individual in Colorado, who was concerned in culling birds at a industrial poultry facility.

March 7, 2022

Greater than 22 million commercially raised US chickens and turkeys have been killed since February 2022 on account of outbreaks of a extremely deadly kind of chicken flu.

March 4, 2022

A chicken flu outbreak is reported in a industrial flock of chickens being raised for meat in Stoddard County, Missouri, taking the unfold of the virus to 10 industrial rooster and turkey farms in 4 states.

Feb. 9 , 2022

The USDA reported an outbreak of extremely pathogenic avian flu in an Indiana turkey flock, the nation’s first case in a industrial poultry operation since 2020.