Zika virus
The Zika virus is now present in 23 countries and territories in the Americas. In picture: A health worker fumigates the Altos del Cerro neighbourhood as part of preventive measures against the Zika virus and other mosquito-borne diseases in Soyapango, El Salvador 21 January, 2016.Reuters

Europe saw another case of the Zika virus that has plagued Latin American and Caribbean nations after a person in Denmark tested positive for the virus that is believed to be linked to brain defects in infants. 

The Denmark resident had travelled to South America and Central America and was tested positive for the Zika virus on his return, national broadcaster DR reported on Wednesday, according to Reuters

The mosquito-borne virus has spread in at least 21 countries in Latin America and the Carribean and is said to be the cause of hundreds of babies being born with abnormally small heads due to a birth defect called microcephaly.

Earlier this month, three people in the UK were diagnosed with the virus after they travelled to Colombia, Suriname and Guyana. 

In the US, about 20 cases of the Zika virus have been reported in recent days, prompting authorities to issue travel advisories, especially for pregnant women.

On Monday, the World Health Organisation said that the Zika Virus is likely to spread to all countries in the Americas, except Canada and Chile. 

US President Barack Obama on Tuesday called for urgent research and development of vaccines and treatments to fight the virus, according to Reuters

There is currently no vaccine or treatment for those inflicted with the virus.