Two Sydney locals have been diagnosed with the Zika virus after returning from travels in the Caribbean following a global outbreak of the mosquito-borne virus.

The virus was detected in the two people on Friday, NSW Health confirmed in a statement released on Tuesday, after the pair returned home from Haiti.

‘It is very unlikely that Zika virus will establish local transmission in NSW as the mosquitoes (Aedes aegypti) that spread the infection are not established here – although they are found in some parts of north Queensland,’ the NSW Health statement said.

However, it has been reported that mosquitos capable of carrying the virus have been detected at Sydney International Airport.

Scroll down for video

Two Sydney locals have been diagnosed with the mosquito-borne Zika virus after travelling to the Caribbean

The Federal Department of Agriculture has since stepped up spraying procedures on international plane arrivals.

It is recommended that pregnant women or those who could become pregnant avoid travel in affected areas.

There is no vaccine against the mosquito-borne virus.

Queensland's Health Minister Cameron Dick says monitoring is under way in the remote northern region to ensure it is detected early, should it arrive.

'We'll monitor closely through the Torres Strait. We already do that with a number of infectious diseases,' he told reporters in Gladstone on Monday.

Alice Bezerra, who has microcephaly, is held by her mother Nadja Cristina Gomes Bezerra in Recife, Brazil. It's understood the Zika virus can lead to microcephaly in infants

The WHO has set up an International Health Regulations Emergency Committee to examine Zika and will meet on Monday to decide whether it constitutes a global emergency on the scale of Ebola

In the last four months, authorities have recorded close to 4,000 cases in Brazil in which the mosquito-borne Zika virus may have led to microcephaly in infants

'That would possibly be one path of entry into Queensland.'

Mr Dick has sought a briefing from the state's chief health officer.

'My advice is that it's not a significant risk to Queensland at this time,' he said.

'But we're going to continue to monitor that.'

Mr Dick indicated he may raise the need for a co-ordinated, federal response depending on what the briefing said.

He said the virus was carried by mosquitoes that were present in tropical and sub-tropical environments and that meant Queensland, the Northern Territory and northern Western Australia could wind up being pathways for the disease.

A 27-year-old Australian man is believed to have contracted Zika in Bali last year after he was bitten by a monkey.

He was diagnosed at the Royal Darwin Hospital in the Northern Territory after he presented with fever and a rash, according to a report from May 2015.

At present, there are no vaccines, specific treatments or rapid diagnostic tests for it. Above a city worker in Santa Tecla, El Salvador fumigates a neighborhood on January 29

According to the United Nations , El Nino can cause an 'increase in vector-borne diseases including dengue, chikungunya and Zika virus due to increased mosquito vectors.' Above a worker fumigates a neighborhood in Managua, Nicaragua on January 28

His illness came seven days after he was bitten by a monkey at Bali's Ubud Monkey Forest, although the 27-year-old was also bitten by mosquitoes during his trip.

In 2014, four cases of Zika virus infection were diagnosed in NSW in people who had recently travelled from Cook Islands.

In 2015, there was one additional case diagnosed in NSW in a returned traveller from Solomon Islands.

Another Australian woman is believed to have contracted the Zika virus in Jakarta, according to a 2013 report.

The 52-year-old woman was diagnosed with Dengue fever after returning to Australia and is understood to have been the first case of the Zika virus infection reported in a 'returned traveller' in Australia.

Zika virus has been linked to severe birth defects and is spreading quickly through the Americas, and many southeast Asian nations are braced for outbreaks.

An Australian became ill with Zika virus seven days after he was bitten by a monkey at a Bali Monkey Forest

The 27-year-old man was diagnosed with acute Zika virus at the Royal Darwin Hospital in Australia's North Territory after he presented with fever and a rash after his Bali holiday, according to the report from May 2015

'Transmission of Zika virus by monkey bite or other (non-mosquito) routes, and attribution of illness to dengue or other infections, may be more frequent than the absence of prior reports suggests,' says the report, published in the Southeast Asian Journal of Tropical Medicine and Public Health in May 2015.

The World Health Organization is preparing to hold a meeting to decide whether the Zika virus outbreak should be considered a global emergency.

It's understood the misdiagnosis of cases of Zika virus occurred as the symptoms are similar to those suffered with conditions such as dengue fever.

The UN health agency warned last week that the mosquito-borne disease was 'spreading explosively' in the Americas, with the region expected to see up to four million cases this year.

Now there are fears the warm weather system El Nino will fuel the outbreak by increasing the mosquito population.

Brazil sounded the alarm in October, when a rash of microcephaly cases, a devastating condition in which a baby is born with an abnormally small head and brain, emerged in the northeast.

Since then, there have been 270 confirmed cases and 3,448 suspected cases, up from 147 in 2014.

There are also growing fears for the Rio Olympics in August, with female athletes saying they may not compete over concerns of contracting the illness.

The WHO has set up an International Health Regulations Emergency Committee to examine Zika and will meet on Monday to decide whether it constitutes a global emergency on the scale of Ebola.