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From December 2007 to January 18, 2008, the
Ministry of Health informs has received 33 reports of
suspected cases of
yellow fever.
Of these, twelve cases have been
officially confirmed (eight developed to
death), fourteen were discarded and the others are still under investigation.
The confirmed cases,
probably acquired the disease in Goias
and Mato Grosso do Sul
Although the infection has occurred in the rural area
(transmission wild), the cases of
yellow fever, in general, are recognized and diagnosed
in urban areas.
During the period in which the virus
of
yellow fever is present in the blood, a person can serve as a source
of infection for the mosquito.
In Rio de Janeiro, as in other cities, there
is a Aëdes aegypti mosquito, which transmits the
dengue, but can transmit
yellow fever.
Therefore, the possibility exists of transmission urban
permanently since the reintroduction of the Aëdes aegypti in
Brazilian cities, in the eighties.
The
Cives recommends that the traveler be
vaccinated against
yellow fever, resalvando up the contra-indications, at least ten days
before we go to any area - even the urban-regions with risk of
transmission of yellow fever in Brazil.
In addition, recommends that travelers carefully observe the
measures of protection against diseases transmitted by insects.
To travellers from areas of risk of
transmission of yellow fever should be vaccinated as part of
routine
vaccination of these regions, regardless of
the destination.
The
yellow fever vaccine
(17D) is prepared with the live
attenuated virus.
In 95% of people the protective
effect (immunity) occurs one week of application.
It confers immunity for at least 10
years (probably longer in most vaccinated).
Therefore, individuals previously vaccinated only require subsequent dose of the
vaccine after 10 years. In Brazil, the vaccine is part of the basic scheme of
children in the states where the disease is endemic.
Yellow
fever: risk areas