Editor's note: the UK has now reinstated its quarantine requirement for travellers arriving from Denmark. Read here for more information.
The advisories were confirmed by the Danish foreign ministry as it updated its current travel guidelines on Thursday.
Danish authorities advise against non-essential travel when the rate of Covid-19 infections exceeds 30 new cases per 100,000 residents per week.
The UK and Ireland are both now in excess of that figure according to figures from the European Centre for Disease Prevention and Control, the EU agency monitoring the data.
The number of countries to which the Danish foreign ministry advises against travel has increased as the coronavirus resurges across Europe. Last week, the ministry advised against all non-essential travel to Switzerland, the Netherlands, Portugal and Austria.
Non-essential travel also already advised against for Andorra, Belgium, France, Croatia, Iceland, Luxembourg, Malta, Monaco, Romania, Slovenia, Spain, Czech Republic, and Hungary. The advisories are not legally binding but Danish tourists' consumer rights are voided if they are not followed.
In addition to these countries, Denmark also currently advises against travel to Estonia, Finland, Latvia and Lithuania because of restrictions such as quarantine placed by these countries on arrivals from Denmark.
People who live in countries to which Denmark advises against travel are required to provide a so-called “worthy” (anerkendelsesværdigt) reason for entering Denmark. This can include work or family reasons but not tourism. Detailed guidance can be found on the Danish police website. For the UK and Ireland, as well as Iceland and Slovenia, these rules take effect from Saturday September 26th.
After returning home from a country to which the foreign ministry advises against non-essential travel, Danish residents are asked to home quarantine for 14 days. The isolation can be ended earlier if you test negative for Covid-19 after returning to Denmark.
The model for travel guidelines for EU and Schengen countries asks travellers to get tested after returning from a region where the number of infections has increased to 50 or more new infections per 100,000 inhabitants in the last week.
The travel guidelines published by the Danish foreign ministry are primarily aimed at Danish tourists. Business travel can be deemed ‘essential', meaning travel to a country on Denmark's ‘banned' list for business purposes is not necessarily advised against.
Individual companies and employees can “assess whether a business trip is a necessary trip”, the ministry wrote in a statement published last week.
“We encourage companies and their employees to follow the Ministry of Foreign Affairs' special travel advice for business travel and stay up to date on local travel restrictions on the relevant embassy website,” it adds.
Denmark also advises against all non-essential travel to non-EU or Schengen area European countries and to the rest of the world. The only current exception to this, Tunisia, is set to be removed as of September 28th, when Tunisian restrictions on incoming travellers come into effect.
The foreign ministry list of recommended travel destinations is updated weekly at 4pm on Thursdays.
In addition to the number of infections, Danish authorities also look at testing and the percentage of tests which are positive. A maximum of five percent of those tested may test positive.