Brazilians spooked by yellow fever reports

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Brazilian authorities say it’s not an epidemic, but folks are worried about an outbreak of yellow fever. The government has confirmed 11 cases, including seven fatalities, reports Folha de Sao Paulo. Long lines have formed at vaccination posts. Argentines and others headed to Brazil for vacation have also been queuing up for shots.

Some have even been too hasty in seeking out a new dose of the vaccine, which lasts 10 years. Brazilian authorities have reported 31 overdose cases — probably previously vaccinated people who received new shots before the 10 years ran out. A vaccine overdose can cause fever, headaches and other symptoms, officials say.

Only those visiting affected areas in the nation’s interior need the vaccine, according to authorities. Officials have stressed that there is no danger of an outbreak in the heavily urbanized coastal areas, including the cities of Sao Paulo and Rio de Janeiro, where most Brazilians live and where tourists will arrive en masse for next month’s epic Carnival celebrations. But many urban dwellers are also seeking vaccinations as a precaution.

— Marcelo Soares in Sao Paulo and Patrick J. McDonnell in Buenos Aires