Travel can expose people to many valuable new experiences. It offers chances to see new sights, taste new foods, and meet new people. These opportunities may not exist in the same way at home.
However, travel can also expose people to new health risks. Many people in the United States view polio as a past disease. Yet, in some countries, polio transmission still occurs.
Recent reports show the polio virus appearing in several regions worldwide. Some common travel destinations, including the United Kingdom and Germany, now carry risk. In March 2026, the Centers for Disease Control and Prevention issued a level 2 travel notice.
A level 2 notice advises travelers to take extra precautions. It does not suggest canceling or avoiding nonessential travel. Polio continues to circulate across parts of Africa, the Middle East, and Europe.
What is Polio?
Polio is a serious disease that damages the nervous system. It can cause lasting disability and long-term health complications. In severe cases, the disease can lead to permanent paralysis.
Early infection often causes no symptoms in many people. Over time, symptoms begin to appear and gradually worsen. Common symptoms include fever, fatigue, nausea, headaches, and muscle stiffness.
Some cases become severe and lead to dangerous complications. Polio can cause paralysis in the arms, legs, or breathing muscles. Death can occur when breathing muscles stop working and fail completely.
Polio spreads mainly through contaminated food and drinking water sources. The virus can also spread through poor hygiene and unwashed hands. This happens because the virus can live in infected human feces.
How to Protect from Polio
Vaccination remains the most effective way to prevent polio infection. Health experts strongly recommend vaccination before traveling to affected regions. The CDC advises full vaccination for both children and adults.
Adults who completed vaccination may receive a single lifetime booster shot. This booster helps strengthen protection when traveling to high-risk international areas. It is especially recommended where polio still circulates among populations.
People who never started or completed vaccination should do so immediately. Completing the vaccine series provides strong protection against severe disease outcomes. Travelers should plan ahead to ensure full protection before leaving.
Polio rarely appears within the United States due to high vaccination rates. Strong immunization coverage has greatly reduced domestic transmission over time. However, international travel can still increase exposure risk to the virus.
Polio spreads more easily during summer and autumn in temperate regions. Seasonal patterns can influence how quickly outbreaks grow in certain areas. Travelers should stay aware of seasonal risks when planning trips abroad.
In tropical regions, seasonal patterns are less clear and predictable. Transmission can occur throughout the year without strong seasonal trends. This makes consistent prevention measures important in those regions.
The most recent reported U.S. polio case occurred in July 2022. Health officials continue monitoring global cases and potential risks to travelers. Staying informed helps people make safer and more prepared travel decisions.
Conclusion
Polio remains a serious risk in some travel destinations worldwide. Vaccination offers strong protection and is recommended before traveling abroad. Taking simple precautions can reduce risk and help prevent severe illness.
Have an upcoming trip? Passport Health offers a wide variety of options to help keep you safe from disease, including vaccines. Call or book online to schedule your appointment today.
Logan Hamilton is a health and wellness freelance writer for hire. He’s passionate about crafting crystal-clear, captivating, and credible content that elevates brands and establishes trust. When not writing, Logan can be found hiking, sticking his nose in bizarre books, or playing drums in a local rock band. Find him at loganjameshamilton.com.
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