San Diego County has a closed sewage system, meaning that its stormwater and wastewater do not intentionally intermix. This greatly reduces, but does not eliminate, the probability that this detection is from an environmental source such as migrating birds.

Wildfire. Fire name: View. View Fire initially started today at 1:06 p.m. in San Diego County. It has been burning on private

In addition to San Diego, wastewater bird flu detections in California included west Contra Costa County on June 10, Turlock on Sept. 4, southeast San Francisco on June 18 and June 26 and Palo Alto on July 4, July 9 and June 19.

Genetic analysis of a bird flu virus detected in a person in Missouri who didn’t previously have contact with animals offers more details on the case, but experts say there isn’t substantial evidence

A new wildfire was reported today at 8:30 p.m. in San Diego County. Potrero 11 Fire has been burning on private land. At this time, the cause of the fire remains undetermined.

Last week, a person in Missouri was infected with bird flu despite not having any exposure to animals. The state’s health department said the individual recovered from their illness but that a household contact of the patient had become ill with similar symptoms on the same day.