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Of 226 countries or territories with foreign travel advice pages, 68 are currently flagged as having no-go zones due to security issues, health risks and legal differences with the UK.
[3]: 25–27 Most requirements apply only to travel to or from so-called polio-endemic, polio-affected, polio-exporting, polio-transmission, or "high-risk" countries. [4] As of August 2020, Afghanistan and Pakistan are the only polio-endemic countries in the world (where wild polio has not yet been eradicated). [5]
The U.S. Centers for Disease Control and Prevention is adding several countries to the list of high-risk travel destinations.
A travel warning, travel alert, or travel advisory is an official warning statement issued by government agencies to provide information about the relative safety of travelling to or visiting one or more specific foreign countries or destinations. [1]
Certain countries and territories require travellers arriving from certain jurisdictions to be vaccinated against specific diseases. This is a map of the minimal vaccination requirements for stateless persons arriving from countries that aren't classified as "risk countries".
Polio has been around since ancient times and some outbreaks are putting travelers at risk, the CDC says. CDC warns travelers of 'high risk' of polio if visiting these 30 countries Skip to main ...
As of 2025, holders of a United States passport may travel to 186 countries and territories without a travel visa, or with a visa on arrival. The United States passport ranks [Note 1] 9th in terms of travel freedom, according to the Henley Passport Index. [1] It is also ranked 8th by the Global Passport Power Rank. [2]
Larger countries are considered to have a “very high” risk for COVID-19 when they report more than 500 cases of new COVID-19 cases per 100,000 people.