US warns travelers of deadly yellow fever in Brazil

March 16, 2018

A deadly and growing yellow fever outbreak in Brazil has killed at least four international visitors, and US health officials on Friday warned travelers to get vaccinated or stay away.

Yellow fever is a that often causes no symptoms. Some people may experience fever and nausea, and in about 15 percent of cases the infection can turn severe and lead to jaundice and multiple organ failure.

Since early 2017, the virus has been spreading in several of Brazil's eastern states, "including areas where yellow fever was not traditionally considered to be a risk," said the report by the US Centers for Disease Control and Prevention.

Affected areas include the states of Rio de Janeiro, Minas Gerais and Sao Paulo, including areas close to the city of Sao Paulo.

"Be protected or don't go," said Marty Cetron, director of the CDC division of and quarantine.

He warned that the intensity of transmission was "highly unusual" and the risk to travelers is "somewhat unprecedented."

He urged potential travelers to be vigilant, even if they run into difficulties obtaining a vaccine due to low availability.

"Because of the challenge of getting the vaccine we don't want them to hesitate and think, 'Oh I will just go without it. It can't hurt, my friends have gone before and nothing has happened,'" he told reporters on a conference call.

The vaccine should be given 10 days before travel.

A total of 10 from Europe and South America who were not vaccinated prior to traveling to Brazil have been infected with yellow fever already this year.

Officials warned of a specific hotspot on Ilha Grande, a forested island off the coast of Rio de Janeiro, where eight international visitors have contracted yellow fever. Four of them died—a Swiss national, a German and two travelers from Chile.

"This suggests Ilha Grande is an exceptionally hot spot for yellow virus transmission," said Cetron.

Brazil's have confirmed 920 cases of , including more than 300 deaths since July 2017 far higher than the previous year which saw 196 deaths.

Explore further: Brazil yellow fever outbreak largest in decades; 846 cases

Related Stories

Brazil yellow fever outbreak largest in decades; 846 cases

March 7, 2018
Brazil's yellow fever outbreak has now infected more people than the previous one, which had been the largest in decades.

Sao Paulo shuts parks as yellow fever outbreak kills 70

January 23, 2018
Sao Paulo closed its zoo and botanical gardens Tuesday as a yellow fever outbreak that has led to 70 deaths is picking up steam.

Brazil yellow fever cases on track to surpass last outbreak

March 1, 2018
Brazil has confirmed 723 cases of yellow fever, putting the current outbreak on track to surpass the previous, unusually large one.

Nearly 70 have died from yellow fever in three Brazilian states

January 23, 2018
Authorities say that nearly 70 people have died from yellow fever in three southeastern Brazilian states in the current outbreak.

Brazil to vaccinate 23.8 million people against yellow fever

January 26, 2018
Brazil is vaccinating more than 20 million people against yellow fever to control a budding outbreak.

WHO: All of Sao Paulo state at risk for yellow fever

January 16, 2018
The World Health Organization announced Tuesday that it now considers all of Sao Paulo state at risk for yellow fever, recommending that all international visitors to the state be vaccinated.

Recommended for you

Researchers seek vaccine for 'traveler's diarrhea'

September 25, 2018
Every year, millions of people have vacations and business trips ruined when they succumb to "traveler's diarrhea" during their journeys. A major cause of traveler's diarrhea is bacteria called Enterotoxigenic E. coli, or ...

New way of determining treatment for staph infections cuts antibiotic use

September 25, 2018
Using a clinical checklist to identify eligible patients, doctors were able to shorten the antibiotic duration for patients with uncomplicated staphylococcal bloodstream infections by nearly two days, Duke Health researchers ...

Breakthrough in designing a better Salmonella vaccine

September 24, 2018
UC Davis researchers announce in the Proceedings of the National Academy of Sciences this week a breakthrough in understanding which cells afford optimal protection against Salmonella infection—a critical step in developing ...

Antifungal agent found to be possible treatment for porphyria

September 24, 2018
A large team of researchers from Spain, France and the U.S. has found that a common antifungal agent might be useful as a treatment for a rare type of porphyria. In their paper published in the journal Science Translational ...

New findings on the muscle disease Laing early-onset distal myopathy

September 24, 2018
New avenues are now being opened toward treatment of Laing distal myopathy, a rare disorder that causes atrophy of the muscles in the feet, hands and elsewhere. In a study published in the journal PNAS, researchers have identified ...

Insulin shows great potential against chronic colitis

September 24, 2018
Diabetes is not the only disease on which insulin has an effect, it appears. In a new study using tests on mice, researchers from the University of Copenhagen, among others, have discovered a new method for treating chronic ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.