Nonhuman primates exposed to Zika virus in utero are not protected against reinfection at 1 year postpartum.

Abstract:

:There is limited information about the impact of Zika virus (ZIKV) exposure in utero on the anti-ZIKV immune responses of offspring. We infected six rhesus macaque dams with ZIKV early or late in pregnancy and studied four of their offspring over the course of a year postpartum. Despite evidence of ZIKV exposure in utero, we observed no structural brain abnormalities in the offspring. We detected infant-derived ZIKV-specific immunoglobulin A antibody responses and T cell memory responses during the first year postpartum in the two offspring born to dams infected with ZIKV early in pregnancy. Critically, although the infants had acquired some immunological memory of ZIKV, it was not sufficient to protect them against reinfection with ZIKV at 1 year postpartum. The four offspring reexposed to ZIKV at 1 year postpartum all survived but exhibited acute viremia and viral tropism to lymphoid tissues; three of four reexposed offspring exhibited spinal cord pathology. These data suggest that macaque infants born to dams infected with ZIKV during pregnancy remain susceptible to postnatal infection and consequent neuropathology.

journal_name

Sci Transl Med

authors

Vannella KM,Stein S,Connelly M,Swerczek J,Amaro-Carambot E,Coyle EM,Babyak A,Winkler CW,Saturday G,Gai ND,Hammoud DA,Dowd KA,Valencia LP,Ramos-Benitez MJ,Kindrachuk J,Pierson TC,Peterson KE,Brenchley JM,Whitehead SS,

doi

10.1126/scitranslmed.aaz4997

subject

Has Abstract

pub_date

2020-10-28 00:00:00

issue

567

eissn

1946-6234

issn

1946-6242

pii

12/567/eaaz4997

journal_volume

12

pub_type

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