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© Therese Couderc, Marc Lecuit
Publication : The Journal of infectious diseases

Chikungunya virus infection of corneal grafts

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The Journal of infectious diseases - 15 Jun 2012

Couderc T, Gangneux N, Chrétien F, Caro V, Le Luong T, Ducloux B, Tolou H, Lecuit M, Grandadam M

Link to Pubmed [PMID] – 22706183

J. Infect. Dis. 2012 Sep;206(6):851-9

BACKGROUND: Chikungunya virus (CHIKV) is an arbovirus with a high potential to spread globally. We investigated whether CHIKV is transmittable via corneal grafts.

METHODS: Serum specimens from 69 potential corneal donors living in La Réunion during the 2005–2006 outbreak of CHIKV infection were screened for anti-CHIKV antibodies. Serum specimens and corneoscleral rims were subjected to quantitative reverse-transcription real-time polymerase chain reaction (qRT-PCR) for detection of CHIKV. CHIKV isolation and immunolabeling were performed on eye tissue specimens. Viral transmission via the ocular route was assessed in an animal model of human CHIKV infection.

RESULTS: Twelve apparently uninfected donors were viremic and/or positive for immunoglobulin M (IgM) and/or immunoglobulin G. Eye tissue specimens from 12 donors who were or were not viremic and were or were not seropositive were investigated. qRT-PCR detected CHIKV RNA in corneoscleral rims from 4 patients: 1 patient was viremic, 2 were viremic and IgM positive, and 1 was IgM positive. Infectious CHIKV was isolated from all qRT-PCR–positive samples, and antigens were detected in corneal and scleral specimens, the iris, the ciliary body, and oculomotor muscles.

CONCLUSIONS: One-third of eligible corneas (4 of 12) from donors apparently uninfected with CHIKV were infected with CHIKV during the study period. CHIKV infects the human cornea and can be transmitted via the ocular route. In the absence of systematic CHIKV screening in donors, cornea donation should be banned in areas where CHIKV circulates.

http://www.ncbi.nlm.nih.gov/pubmed/22706183