An extensive look at wastewater samples taken across the United States from May to July found traces of the H5N1 bird flu ...

San Diego County has a closed sewage system, meaning that its stormwater and wastewater do not intentionally intermix. This ...

Avian flu in dairy cows could stick around on US farms forever, and is raising the risk of outbreaks in mammals—including ...

Mysterious US bird flu case in person without any known contact with an infected animal raises spectre of human-to-human ...