U.S. and California health officials confirmed two new cases of H5N1 bird flu in dairy farm workers in the state on Friday, bringing the total of infected dairy workers in that state to six, and the total of human cases nationwide this year to 20.

Two additional human bird flu cases confirmed in California

California confirms fourth human case of bird flu
California on Thursday confirmed a fourth case of bird flu in a person who had contact with infected dairy cattle.

California confirms third human case of bird flu, finds more possible cases
California reported a third human case of bird flu on Wednesday in a dairy worker who had contact with infected cattle and said the state identified two more possible cases in people.

Australia, New Zealand brace for looming bird flu threat
Australia and New Zealand are bracing for the arrival of a destructive bird flu strain by tightening biosecurity at farms, testing shore birds for disease, vaccinating vulnerable species and war-gaming response plans.

Two California dairy farm workers test positive for bird flu
Health officials in California are monitoring other exposed workers for symptoms on two dairy farms where two human cases of bird flu were confirmed on Thursday, the U.S. Centers for Disease Control and Prevention said.

U.S. farmers call for vaccine option to fight bird flu as wildfowl migration begins
U.S. farmers are increasing pressure to allow vaccinations for chickens, turkeys and cows to protect them from bird flu infections that have devastated flocks for three years,

Hunters urged to take biosecurity measures against bird flu
Farmers who plan to hunt geese and ducks this fall should take biosecurity measures to ensure they don't transmit high path avian influenza (bird flu) to their flocks and herds.

CFIA cautions against taking cattle to U.S. shows as bird flu outbreak continues
The Canadian Food Inspection Agency recommends that farmers do not take dairy or beef cattle to shows or agricultural exhibitions in the United States to reduce the risk of spreading avian influenza (bird flu) to Canadian herds.

U.S. human case of bird flu detected without known animal exposure
The Missouri Department of Health and Senior Services said on Friday that a person hospitalized with bird flu was the first human case detected in the United States without any known animal exposure.

US tests for bird flu in California dairy cattle
The U.S. Department of Agriculture is testing to confirm possible cases of bird flu in dairy cattle in California, the nation's biggest milk-producing state, USDA said on Friday.