Brief19

Name: Brief19 - AI Visibility Score
Creator: Engagemii
Published: 2026-06-26T20:37:40.106Z
License: https://creativecommons.org/licenses/by/4.0/

Unclaimed

AEO Score: 4/10

Monitoring for AI engine activity

In the Engagemii AEO index

brief19.com

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What this score means

Your AEO score measures whether AI search engines (ChatGPT, Claude, Perplexity, Gemini) can actually read your site and cite it in answers. Two-thirds of websites are invisible to them. Brief19 just got measured.

4/10 means Brief19 is borderline visible. AI bots can crawl your site but your structured-data signals are thin. You are at risk of being skipped when buyers ask AI for a recommendation.

About Brief19

Brief19 is a daily executive summary of covid-19-related medical research, news, and public policy. It was founded and created by frontline emergency medicine physicians with expertise in medical research critique, health policy, and public policy.

Key Topics

Moderna Vaccine Shows Reduced Activity Against South Africa B.1.351, Brazil (P.1), and California (B.1.427/B.1.429) Coronavirus Variants. However, it Remains Highly Active Against U.K. B.1.1.7 Variant

Oxford/AstraZeneca Fails to Prevent Mild to Moderate Covid-19 From B.1.351 (“South Africa”) Variant

Major NIH-Funded Trial of Convalescent Plasma in Covid-19 Outpatients Stopped Early Due to Futility

Facebook’s Approach to Covid-19 and Vaccine Misinformation

An in-depth analysis of Biden’s proposed stimulus package

Johnson & Johnson publishes early data for its covid-19 vaccine candidate. The vaccine is a few months behind the mRNA options but may eventually offer advantages