Your Local Epidemiologist in California
Katelyn Jetelina, Megan Maisano, MS, RDN, Matt Willis, Hannah Totte, MPH, Christina LinTranslating the ever-changing science of public health for Californians so you can take action for your community’s health
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 63 | Founded | a year ago | Last Issue | 4 days ago |
| Active | |||||
Read this Newsletter
yourlocalepidemiologistca.substack....Latest Issues
Fall vaccines, and a life-saving policy
This week is all about vaccines: what California got right a decade ago, and what’s new for this year’s shots.
Closing a dangerous loophole for school-required vaccines
A baby died of measles in Pennsylvania last week. So did a...
Tackling asthma in schools, Covid-19, and West Nile virus
It’s been a hot late-summer week, and we’re shifting away from summer routines. In our house, were getting back into the rhythms of high school. Today’s Dose focuses on a huge initiative to get asthma meds to kids who need it, and the ongoi...
Rolling back to school: E-bike safety in California
Our kids are headed back to school, and in California, more will get there on e-bikes than ever before. Our state leads the nation in e-bike uptake, with over 96,000 e-bikes purchased in 2025.
For public health, the e-bike boom is a health...
Covid-19 and West Nile surge, and California is protecting vaccine access
Covid-19 hospitalizations are climbing ahead of a murky vaccine rollout, West Nile virus is posting its worst numbers in 20 years, and California is holding the line on vaccine access while the White House backslides even further. We’ll sta...
One Year In
YLE California is turning 1! Man that went fast. When I first hit “publish” on on August 14, 2025, I had no idea what to expect. I felt sure about getting the science right, but wasn’t sure anyone would be listening and engaging on the othe...
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Your Local Epidemiologist in California.
| Subscribers | Engagement | 80 | Monthly Web Visits | ||
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| Accepts Sponsors | Estimated Cost per Ad | ||||
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| Ranked Keywords | 260 | Monthly Search Traffic | Top Keywords |
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Authors
The writers behind this newsletter.
An epidemiologist trying to make sense of this world
Registered Dietitian | Science Communication | Public Health Nutrition | Mom of 4 | Army Vet | Wellness Noise Cutter
Matt Willis is a physician, epidemiologist and former Public Health Officer for Marin County, California.
Epidemiology MPH. NorCal / NYC / SoCal. Lover of surf, stats, equity, plants. Might challenge you to Scrabble.
Infectious diseases physician and microbiologist with a passion for public health.
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