State of Hawaii The Hawai‘i Department of Health (DOH) State Laboratories Division has detected H5 avian influenza (bird flu) in a wastewater sample collected on Dec. 2 at the Hilo Wastewater Treatment Plant on Hawaiʻi Island.
This is the first detection of bird flu on a neighbor island and indicates an H5 type of bird flu virus was present. Wastewater testing cannot determine if the detection is specifically the Highly Pathogenic Avian Influenza (HPAI) H5N1 subtype of bird flu virus which was recently found on Oʻahu.
The presence of the H5N1 virus in Hawaiʻi was first confirmed in November 2024 in a backyard flock of birds in Central Oʻahu. That virus strain was a different genotype of the virus that has infected birds and dairy cows on the U.S. mainland.