California landscape

Infectious Diseases Risk in Los Angeles County

California Population: 9.8M Updated May 24, 2026
Moderate
Infectious Diseases Risk

Prevalence Trend

4-week history
May 3 May 10 May 17 May 24
Low
Moderate
High
Very High
→ Stable

Summary

The infectious disease risk has generally decreased over the past 12 weeks, with a recent slight uptick that remains below earlier levels, indicating a downward trend overall.

Key Insights

High
12.7 (Week of May 10)
Low
9.0 (Week of May 3)
Trend
Stable

County Prevalence Map

Updated daily
California county-level Infectious Diseases Risk prevalence map
County-level Infectious Diseases Risk prevalence — California — May 24, 2026
Published by Hubbub World — health risk data for all US states and counties. Get the bub app for today's data and 30-day forecasts.

The Infectious Risk index combines COVID-19, Flu, and RSV data into a composite score reflecting overall respiratory disease burden. It provides a single view of infectious disease activity in your area, weighted by severity and transmission potential.

Data is updated daily. The composite score uses a weighted average of individual disease risk scores.

Sources: CDC surveillance networks, state health departments, Hubbub World composite model

Frequently Asked Questions

What is Infectious Diseases Risk?
Infectious Diseases Risk is a combined indicator that captures the overall burden of respiratory infectious disease in an area. It incorporates flu, COVID-19, RSV, and other circulating respiratory pathogens into a single score, useful when you want a general respiratory illness risk reading rather than a per-pathogen breakdown.
How is Infectious Diseases risk measured in Los Angeles County?
Infectious Diseases risk in Los Angeles County is reported as a weekly score on a four-point scale: Low, Moderate, High, and Very High. The score reflects the modeled burden of Infectious Diseases at the county level, validated against public health data from CDC, HHS, NOAA, and other authoritative sources. Methodology details are available at https://www.hubbubworld.com/intelligence#methodology.
What methodology does Hubbub World use?
Hubbub World develops proprietary models on top of the underlying surveillance, environmental, and weather data to produce comparable risk scores across all U.S. counties. Each of the seven risks is reported on a four-point scale (Low, Moderate, High, Very High) so the scores are interpretable without needing the raw underlying numbers. The full methodology — including the modeling approach, validation against authoritative sources, and known limitations — is documented at https://www.hubbubworld.com/intelligence#methodology. The health risk data on Hubbub World is for informational purposes only and does not constitute medical advice. Always consult a healthcare professional for personal health decisions.
Where can I get current Infectious Diseases data for Los Angeles County?
Current Infectious Diseases risk levels and 30-day forecasts for Los Angeles County are exclusive to the bub app, available free on iOS, Android, and Apple Watch at https://bub.hubbubworld.com. This web page is the six-week historical archive — the bub app is where today's data and forecasts live.
How does Los Angeles County compare to the rest of California?
This page shows the six-week weekly history for Los Angeles County as a heatmap. To compare Los Angeles County against other counties in California, visit the California state page on this hub — it links to every county. For an interactive map view that compares all counties side by side, get the bub app at https://bub.hubbubworld.com.

Last updated: May 24, 2026

Data refreshed weekly

Get today's Infectious Diseases risk for Los Angeles County — Download bub