News

'It is terrible'

Painful and rapid spread of new virus in Caribbean

By EZEQUIEL ABIU LOPEZ

Friday, May 23, 2014    

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SAN CRISTOBAL, Dominican Republic (AP) — They suffer searing headaches, a burning fever and so much pain in their joints they can barely walk or use their hands. It's like having a terrible flu combined with an abrupt case of arthritis.

Hospitals and clinics throughout the Caribbean are seeing thousands of people with the same symptoms, victims of a virus with a long and unfamiliar name that has been spread rapidly by mosquitoes across the islands after the first locally transmitted case was confirmed in December.

"You feel it in your bones, your fingers and your hands. It's like everything is coming apart," said 34-year-old Sahira Francisco as she and her daughter waited for treatment at a hospital in San Cristobal, a town in the southern Dominican Republic that has seen a surge of the cases in recent days.

The virus is chikungunya, derived from an African word that loosely translates as "contorted with pain". People encountering it in the Caribbean for the first time say the description is fitting. While the virus is rarely fatal it is extremely debilitating.

"It is terrible, I have never in my life gotten such an illness," said Maria Norde, a 66-year-old woman confined to bed at her home on the lush eastern Caribbean island of Dominica. "All my joints are in pain."

Outbreaks of the virus have long made people miserable in Africa and Asia. But it is new to the Caribbean, with the first locally transmitted case documented in December in French St Martin, likely brought in by an infected air traveller. Health officials are now working feverishly to educate the public about the illness, knock down the mosquito population, and deal with an onslaught of cases.

Authorities are attempting to control mosquitoes throughout the Caribbean, from dense urban neighbourhoods to beach resorts. There have been no confirmed cases of local transmission of chikungunya on the US mainland, but experts say the high number of travellers to the region means that could change as early as this summer.

So far, there are no signs the virus is keeping visitors away, though some Caribbean officials warn it might if it is not controlled. "We need to come together and deal with this disease," said Dominica Tourism Minister Ian Douglas.

One thing is certain: The virus has found fertile ground in the Caribbean. The Pan American Health Organisation reports more than 55,000 suspected and confirmed cases since December throughout the islands. It has also reached French Guiana, the first confirmed transmission on the South American mainland.

The Pan American Health Organisation says seven people in the Caribbean with chikungunya have died during the outbreak, but they had underlying health issues that likely contributed to their death.

"It's building up like a snowball because of the constant movement of people," said Jacqueline Medina, a specialist at the Instituto Technologico University in the Dominican Republic, where some hospitals report more than 100 new cases per day.

Chikungunya was identified in Africa in 1953 and is found throughout the tropics of the Eastern Hemisphere. It is spread by two species of mosquitoes, aedes aegypti and aedes albopictus. It's also a traveller-borne virus under the right circumstances.

It can spread to a new area if someone has it circulating in their system during a relatively short period of time, roughly two to three days before the onset of symptoms to five days after, and then arrives in an area with the right kind of mosquitoes.

For years, there have been sporadic cases of travellers diagnosed with chikungunya but without local transmission. In 2007, there was an outbreak in northern Italy, so health authorities figured it was just a matter of time before it spread to the Western Hemisphere, said Dr Roger Nasci, of the US Centres for Disease Control and Prevention.

"With the increase in travellers the likelihood that something like this would happen goes up, and eventually it did," said Nasci, chief of a CDC branch that tracks insect-borne diseases. "We ended up with somebody at the right time and the right place infecting mosquitoes."

The two species of mosquitoes that spread chikungunya are found in the southern and eastern United States, and the first local transmissions could occur this summer given the large number of US travellers to the Caribbean, Nasci said. Already, the Florida Department of Health has reported at least four imported cases from travellers to Haiti, the Dominican Republic and Dominica.

"What we're seeing now is an increase in the number of infected travellers coming from the Caribbean, which is expected because there's a lot of US travel, a lot of vacation travel, a lot of work travel," he said.

Around the Caribbean, local authorities have been spraying fogs of pesticides and urging people to remove standing pools of water where mosquitoes breed.

An estimated 60-90 per cent of those infected show symptoms, compared to around 20 per cent for dengue, which is common in the region. There is no vaccine and the only cure is treatment for the pain and fluid loss.

One consolation for those suffering from the illness is that unlike dengue, which has several variants, people only seem to get chikungunya once.

"The evidence suggests that once you get it and recover, once your immune system clears the virus you are immune for life," Nasci said.

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