First fatal human case of bird flu subtype A(H5N2) confirmed in Mexico - WHO | 5 June 2024 | The first lab-confirmed case of a bird flu subtype in humans killed a Mexican citizen in late April, officials from the World Health Organization said Wednesday. The unidentified 59-year-old victim died April 24 after developing a fever, shortness of breath, diarrhea and nausea, among other symptoms associated with the A(H5N2) subtype. The patient had no history of exposure to poultry or other animals, health officials said. But the person did have several underlying medical issues and had been bedridden for three weeks due to other ailments before being stricken with the avian influenza subtype. The death follows the explosive spread of a new strain of bird flu that's killed a massive amount of wild birds and domestic poultry since its 2020 emergence.