Reletter
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Public Health Night School

René F. Najera

Hi, glad you're here! Read an engaging series of lessons designed to demystify public health science. Learn how diseases spread, what drives health trends, and how data saves lives—all in a fun, accessible way. Perfect for curious minds, no PhD required!

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Substack
PricingFreemiumPublishesDaily
Issues244Founded2 years agoLast Issue3 days ago
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Latest Issues

When Excel Is Not Enough: Why Public Health Analysts Should Learn R

Photo by KOBU Agency on Unsplash

Most public health people do not start in R. They start in Excel.

They clean columns, filter rows, build pivot tables, fix date formats, and chase down weird values by hand. That is not a failure. That is...

3 days ago
2

Five Parasites That Quietly Shaped Human History

From malaria and schistosomiasis to the parasite living inside one-third of humanity, how these organisms have decided wars, reshaped where we live, and disabled hundreds of millions.

When people think of infectious diseases, they picture...

5 days ago
1
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Think Like an Epidemiologist: 5 Skills for a Misinformation Age

The mental habits disease detectives use, and how they apply to headlines, arguments, and daily life.

I get some weird looks from people when I tell them I’m an epidemiologist. It’s a term that is not in the public lexicon, for sure. If it...

7 days ago
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Bad Science Starts With a Broken Mechanism: The Wakefield Case

In 1998, a British gastroenterologist named Andrew Wakefield published a paper in The Lancet claiming that twelve children had developed autism after receiving the measles, mumps, and rubella vaccine. The paper would go on to trigger one of...

13 days ago
2

A Brief History of Statistical Distributions

From 17th-century gamblers to Prussian cavalry horses, the statistical tools epidemiologists use every day have surprisingly human origin stories.

Probability is everywhere. The chance that your flight is delayed. The probability that a ne...

19 days ago
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  • René F. Najera

    Exploring the intersection of science, society, and storytelling. As a public health leader, infectious disease expert, and social epidemiologist, I share insights on vaccines, disease prevention, and the social determinants of health.

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