From Barnyards to Beaches: H5N1 in California Seals

UC Davis has confirmed California’s first cases of highly pathogenic avian influenza (H5N1) in northern elephant seals, marking the virus’s first detection in this species in the state. Marin County benefits from the expertise of the Marine Mammal Center, whose marine wildlife health surveillance strengthens regional One Health awareness and coordination. As H5N1 continues to circulate in wildlife, including dairy cows and poultry, healthcare providers play a critical role in early recognition. When evaluating patients with influenza-like illness, please ask about recent exposure to wildlife, marine mammals, backyard flocks, commercial poultry, or dairy cattle, and follow current public health guidance for testing and reporting suspected cases.

Rising Measles Cases in California

When Seconds Count: Clinical Actions that Change Stroke Outcomes

Stroke remains a leading cause of death and disability in Marin County. Clinicians can improve outcomes by prioritizing routine blood pressure screening and aggressive management of hypertension, which is the most significant modifiable stroke risk factor. Patient education is equally critical. Ensure patients and caregivers recognize stroke warning signs using FAST (face drooping, arm weakness, speech difficulty) and understand the need to call 911 immediately. Promote community preparedness by recommending the PulsePoint app to help locate nearby AEDs and mobilize trained responders.

Every Visit Counts: Strengthening Cancer Prevention in Marin County

Cancer prevention and early detection are critical to improving health outcomes in Marin County, where cancer is the leading cause of premature death. Clinicians can help reduce cancer burden by routinely assessing risk, reviewing screening status, and following evidence-based screening guidelines. Vaccination is a key prevention strategy. Strongly recommend the HPV and Hepatitis B vaccines when indicated, using clear, evidence-based counseling to address hesitancy. National Cancer Prevention Month is an opportunity for Marin County clinicians to strengthen prevention conversations, close screening and vaccination gaps, and connect patients to timely preventive care.

Fluoride, Drinking Water, and Children's Oral Health

This month, the Marin County Board of Supervisors recognized National Children’s Dental Health Month, reaffirming the County’s commitment to prevention and evidence-based oral health. In Marin County, some patients receive fluoridated water through public systems, while others, especially those on private wells or small systems do not. Fluoride has a long, strong safety record and is effective in preventing cavities, especially children with limited access to dental care. Health care providers can support oral health by asking about water sources, reinforcing twice-daily brushing with fluoride toothpaste, encouraging regular dental visits, and connecting families to local dental resources.

Caring for Children Under 5 Exposed to Infectious Tuberculosis

Young children exposed to infectious tuberculosis face unique and urgent risks. Compared to adults, TB in children under five can progress rapidly, present with subtle or atypical findings, and lead to severe disease if not recognized early. To support clinicians navigating these challenges, the Mayo Clinic Center for Tuberculosis (MCCT) has released the Children Under 5 Exposed to Infectious TB Guide. This evidence-based resource outlines key steps for timely evaluation, diagnosis, and management.

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