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Absence of YF-neutralizing antibodies in vulnerable populations of Brazil: A warning for epidemiological surveillance and the potential risks for future outbreaks.

Abstract：

:Yellow Fever (YF) is an acute febrile illness caused by yellow fever virus (YFV), a mosquito-borne flavivirus transmitted to humans and non-human primates. In Brazil, YF is a public health threat and may cause recurrent epidemics, even with the availability of a vaccine. We evaluated the sero-status for YFV in 581 individuals living in a risk area for YF in Brazil. The area presents history of cases and is located in the southeast region of country where outbreaks of YF have been reported since 2016. Through, a PRNT assay, we found 25.8% of individuals lacking YF-neutralizing antibodies. Furthermore, neutralizing antibodies were not detected in 10 individuals with proven vaccination. Our findings reinforce the importance of surveillance systems and the need of an urgent intensification of immunization programs in regions with YFV circulation. Monitoring susceptible individuals that could act as potential disseminators for YFV in risk areas should also be considered.

journal_name

Vaccine

journal_title

Vaccine

authors

Stoffella-Dutra AG,Silva de Oliveira J,Barbosa Costa G,Geessien Kroon E,Santos Abrahão J,Desiree LaBeaud A,Paiva Drumond B,Bretas de Oliveira D,de Souza Trindade G

doi

10.1016/j.vaccine.2020.07.077

subject

Has Abstract

pub_date

2020-09-29 00:00:00

pages

6592-6599

issue

42

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(20)31025-2

journal_volume

38

pub_type

杂志文章

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