Immunity to Yellow Fever

Duration of post-vaccination immunity against yellow fever in adults.

INTRODUCTION Available scientific evidence to recommend or to advise against booster doses of yellow fever vaccine (YFV) is inconclusive. A study to estimate the seropositivity rate and geometric mean titres (GMT) of adults with varied times of vaccination was aimed to provide elements to revise the need and the timing of revaccination. METHODS Adults from the cities of Rio de Janeiro and Alf...

Serologic assessment of yellow fever immunity in the rural population of a yellow fever-endemic area in Central Brazil.

INTRODUCTION The yellow fever epidemic that occurred in 1972/73 in Central Brazil surprised the majority of the population unprotected. A clinical-epidemiological survey conducted at that time in the rural area of 19 municipalities found that the highest (13.8%) number of disease cases were present in the municipality of Luziânia, State of Goiás. METHODS Thirty-eight years later, a new seroep...

Yellow fever.

1MD, Infectious Disease Specialist, Hospital Israelita Albert Einstein, Sociedade Brasileira de Infectologia. MSc in Medicine – Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de São Paulo (FMUSP). PhD in Medicine – Infectious and Parasitic Diseases, FMUSP. Fellow American College of Physicians, São Paulo, SP, Brazil 2MD, Infectious Disease Specialist, Hospital Israelit...

Yellow fever

Yellow fever.

With the infestation by Aedes aegypti, urban yellow fever might already exist. This did not occur because of either the lacking of a sufficient contact between the diseased individual and the A. aegypti or perhaps because this, after sixty years without transmitting the virus, needs an adaptation phase to infecting again.