If you grew up in the United States in the 1980s or ’90s, chances are you remember The Oregon Trail. For many like me, it was our first computer game and our first introduction to wilderness survival. We hunted buffalo, forded rivers, broke wagon wheels and, of course, learned about dysentery years before Google even existed, all while hoping our group would make it to Oregon City alive.

Lately, the game has found a second life. Nostalgic social media posts, memes and updated versions of the game have introduced The Oregon Trail to a new generation while reminding millennials just how unforgiving that grainy computer screen journey could be.

As a physician who specializes in emergency and wilderness medicine, I started thinking about how much of what the game taught me about surviving in the wilderness still applies today. After all, modern hikers and campers have access to tools the pioneers could never have imagined.

Surprisingly, I’d argue that more lessons from The Oregon Trail hold up than you might think.

Clean water is crucial

The Oregon Trail game made dysentery famous for an entire generation. Fortunately, advances in sanitation, hand hygiene and antibiotics have made large outbreaks like those that wagon trains and military camps experienced much less common, at least in the United States.

That doesn’t mean gastrointestinal illnesses have disappeared. Traveler’s diarrhea and cholera are still an important cause of illness around the world. Untreated water, poor hand hygiene and contaminated food can still derail any trip.

Simple habits such as purifying drinking water, washing hands before meals and after using the bathroom, and practicing good camp hygiene remain some of the easiest ways to stay healthy outdoors.

Water purification is important with wilderness travel in the United States and in many areas of the world. There are many easy and cost-effective ways to purify water, such as boiling, filtration and treating with chemical disinfectants. Each method has its benefits and downsides.

Boiling is often the most accessible method. While it can kill bacteria, viruses and........

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