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Int J Infect Dis. 2015 Aug;37:19-24. doi: 10.1016/j.ijid.2015.06.005. Epub 2015 Jun 15.

Silent Circulation of Ross River Virus in French Polynesia.

Author information

1
Unit of Emerging Infectious Diseases, Institut Louis Malardé, PO BOX 30, 98713 Papeete, Tahiti, French Polynesia. Electronic address: maubry@ilm.pf.
2
Hochschule Emden/Leer, Constantiaplatz 4, D-26723 Emden, Germany.
3
Unit of Emerging Infectious Diseases, Institut Louis Malardé, PO BOX 30, 98713 Papeete, Tahiti, French Polynesia.
4
Centre de Transfusion Sanguine de la Polynésie française, Hôpital du Taaone, PO BOX 4530, 98713 Papeete, Tahiti, French Polynesia.
5
Departement Infections and Epidemiology, Institut Pasteur, 75724 Paris, France.
6
Departement Infections and Epidemiology, Institut Pasteur, 75724 Paris, France; UMR PIMIT (12T) Université de La Réunion, INSERM U1187, CNRS 9192, IRD 249, GIP-CYROI, 97491 Sainte-Clotilde, France.

Abstract

OBJECTIVES:

Ross River is an emerging mosquito-borne disease in the Western Pacific. Ross River virus (RRV) circulation has been sporadically reported in some Pacific Island Countries and Territories but never in French Polynesia. To determine if RRV has circulated locally among the French Polynesian population, we conducted a seroprevalence study on blood donors.

METHODS:

Sera of 593 blood donors were collected from July 2011 to October 2013 and tested by ELISA for the presence of RRV-specific Immunoglobulin G (IgG) antibodies.

RESULTS:

A total of 204 (34.40%) blood donors were found seropositive for RRV. Among the 132 blood donors that were born in French Polynesia and had never travelled abroad, 56 (42.42%) had RRV-specific IgGs.

DISCUSSION:

Our results support the existence of autochthonous RRV transmission and suggest that this pathogen has silently circulated in French Polynesia. These findings raise the question of possible undetected circulation of RRV in other Pacific Island Countries and Territories.

KEYWORDS:

Blood donors; French Polynesia; Ross River; Seroprevalence

PMID:
26086687
DOI:
10.1016/j.ijid.2015.06.005
[Indexed for MEDLINE]
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