One person in Denmark has tested positive for the Zika virus, according to the national news agency Ritzau.

Health authorities from Denmark said the patient travelled to South and Central America where the disease has taken hold.

There is no vaccine or treatment for Zika, which has been linked to brain damage in thousands of babies in Brazil.

It comes as three UK travellers have been diagnosed with the mosquito-borne disease.

They travelled in Colombia, Suriname and Guyana - although it is not clear whether they have returned to the UK or if any of the three are pregnant women.

The condition prevents babies' brains from developing properly and six people have so far tested positive for the virus in Hawaii, although all are understood to have been infected outside the US.

EU warning

The European Centre for Disease Surveillance and Control (ECDC) has issued an updated risk assessment on the virus.

It says El Salvador, Venezuela, Colombia, Brazil, Suriname, French Guiana, Honduras, Mexico, Panama and Martinique are currently experiencing a "rapidly evolving" Zika virus epidemic - with an increasing or widespread transmission.

While Bolivia, Guyana, Ecuador, Guadeloupe, Guatemala, Paraguay, Puerto Rico, Barbados, Saint Martin, Haiti and Dominican Republic have only reported sporadic transmission.

Concerns about the disaese have also led the US Centers for Disease Control and Prevention (CDC) to issue a travel warning - advising women to postpone their visits to 14 countries and territories in the Caribbean and Latin America where infection with Zika is a risk.

The travel alert applies to Brazil, Colombia, El Salvador, French Guiana, Guatemala, Haiti, Honduras, Martinique, Mexico, Panama, Paraguay, Suriname, Venezuela and Puerto Rico.

Last week a baby born with microcephaly in Hawaii became the first newborn to test positive for the Zika virus on US soil. It is understood the mother contracted the virus while in Brazil.