epa10501604 A handout photo made available by the Ecuadorian Ministry of Agriculture and Livestock showing the vaccination of a bird, in the Puellaro sector, Ecuador, 03 March 2023. The Ecuadorian authorities began vaccination against bird flu this 03 March with the application of the first 4 million doses that arrived in the country, after about 1.2 million birds were lost, either killed or euthanized due to various outbreaks.  EPA/Ecuadorian Ministry of Agriculture HANDOUT ONLY AVAILABLE TO ILLUSTRATE THE ACCOMPANYING STORY/CREDIT MANDATORY HANDOUT EDITORIAL USE ONLY/NO SALES