FOI Clinical is a resource from the team behind Force of Infection, trusted by 46,000 readers for flu, Covid-19, RSV, and norovirus tracking.
We track outbreaks and disease activity, then send you detailed reports on what's relevant to your practice.
Our track record
Force of Infection has run continuously since 2022, with readers in all 50 states and an 85% annual retention rate, which is far above the industry average for newsletters.
In it's first month, 96% of FOI Clinical survey respondents reported that the reports were useful. FOI Clinical has been featured in Medscape and NPR.
In September 2022, Force of Infection gave early warning of what became the tripledemic. In October 2025, we warned that the 2025–2026 flu season was shaping up to be big. We gave readers weeks of lead time before it hit the news or their communities.
During two protracted government shutdowns, federal agencies stopped releasing surveillance data, so we went to all 50 state health department websites and collected the data ourselves. We do whatever it takes to get the data.
What we cover
- Reportable diseases like measles outbreaks, pertussis clusters, and other infectious conditions worth knowing about
- Emerging threats like new or emerging infectious diseases, plus international outbreaks with U.S. relevance
- Policy changes, including ACIP updates, vaccine schedule changes, and other issues that affect your practice
How it works
Each week, paid subscribers receive a report in their inbox with updates on current outbreaks, with epidemiological context and a takeaway for your practice. We also keep an eye on long-term trends, like rising incidence of Candida auris, that clinicians should have on their radar.
When something urgent happens, we send out alerts same-day. Events that would merit an alert include, for example, ACIP changes, a new pathogen detected in the U.S., or a major vaccine recall.
Every report will be sent to your inbox and also published online for easy access. As we grow, we hope to expand into dashboards and other tools. We're a small team launching with the essentials first and building from there based on subscriber feedback and priorities.
Our approach
FOI Clinical is managed by an epidemiologist, not a clinician. We focus on trends, trajectories, and epidemiological context. For clinical guidance, we link to IDSA and other reliable sources.
We do primary analysis of NNDSS, the national system for reportable disease data. NNDSS is one of the most important disease surveillance sources in the country, but the data is locked in a system that is difficult to query and rarely reported on. We are one of the few sources analyzing this data and translating it for a clinical audience. We also draw from state health department data, federal and state health alerts, BEACON, WastewaterSCAN, SyndromicTrends, and other sources.
What we don't cover:
- Clinical guidance, but we link out to reliable sources
- Non-infectious disease topics
- Politics, except as it meaningfully relates to infectious disease events
How is FOI Clinical different from Force of Infection?
Force of Infection covers seasonal respiratory viruses like flu, Covid-19, RSV, and norovirus for a general audience. FOI Clinical is designed for clinicians and covers a different set of diseases, including reportable conditions like measles and pertussis, emerging outbreaks, and policy changes that affect patient care. The target audience is more clinical and the focus is on equipping clinicians with the information they need in their practice.
Contact
Email [email protected] for gift subscriptions, institutional subscriptions, or questions.