Dog Disease Outbreaks in California

Dublin, Alameda County

SPCA

Dublin, Alameda County

Dublin, Alameda County, California

Mountain Center

Lake Hemet: Warning advisory, harmful algal bloom confirmed. Keep dogs out of the water

Crowley Lake

Crowley Lake: Danger advisory at Hilton Creek Drainage (stay out), Caution at South Landing Marina

Big Bear Lake

Big Bear Lake: Warning advisory, harmful algal blooms throughout the lake. Keep pets out of the water

Navarro

Two toxic-algae advisories on the Navarro River in July 2026; pinned at Navarro River Redwoods State Park

Scotia, Humboldt County

Eel River near Scotia, dog died after swimming in a stagnant side pool

Fremont

Rabid bat found near Palo Verde Common in south Fremont, within reach of pedestrians and animals; no known human or animal exposures

Angels Camp, Calaveras County

Rail Road Flat

Multiple dogs impounded from the Railroad Flat area tested positive; Calaveras County Animal Services suspended dog intakes 14-21 days

Is there a dog disease outbreak in California right now?

ParvoMaps is currently tracking 5 active reports in California, most commonly blue-green algae. Reports stay marked active for a set window per disease, then move to historical.

What dog diseases have been reported in California?

Reports in California cover blue-green algae, rabies, giardia, kennel cough, parvovirus, drawn from news coverage, health department notices and community reports.

How do I know if a report near me is still current?

Every report carries the date it happened and a link to its source. Each disease has its own active window — blue-green algae advisories expire in 30 days, parvo reports stay active for a year — so a pin marked active is one still worth acting on.