Poultry trade bans triggered by a bird flu outbreak in Brazil may weigh on domestic chicken prices, offering some relief - if even short-lived - from the food inflation that has undermined the government's popularity,

SAO PAULO (Reuters) - A suspected case of bird flu in a farm worker in the Brazilian city of Montenegro came back negative, the health ministry of Rio Grande do Sul, the country's southernmost state, said in a statement on Tuesday.

Brazil, one of the world’s largest producers and exporters of poultry, has confirmed the country’s first bird flu outbreak on a commercial farm.