The first outbreak of bird flu this season on a farm in France has put the industry on watch to see if the country's strategy of vaccinating birds will prove effective, helping avoid a repeat of previous crises that killed millions of poultry. The farm ministry said on Tuesday a first case of the highly pathogenic bird flu was found among turkeys in Brittany, northwestern France, as a seasonal wave of infections spreads across Europe, the United States and Japan. Bird flu is usually carried by migrating wild birds before being transmitted between farms.