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Key events and updates
Bangladesh: Avian influenza A(H5N1)
Situation overview as of 27 May 2025
• An avian influenza A(H5N1) human infection clade 2.3.2.1a was detected in April 2025 in Khulna Division.
• Genetic sequence data (EPI_ISL_19875512) was submitted to GISAID on 18 May 2025.
• Of note, in March 2025, an avian influenza A(H5N1) outbreak was reported in poultry in Jessore, the same district where the case was found.
• A second avian influenza A(H5N1) human infection clade 2.3.2.1a was retrospectively detected from a sample collected in February 2025 in Khulna Division.
• Genetic sequence data (EPI_ISL_19882255) for this case was submitted to GISAID on 26 May 2025.
• Both cases have recovered. These mark the 9th and 10th A(H5N1) cases since the first case was detected in 2008.