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Reagan-Steiner, Sarah; Simeone, Regina; Simon, Elizabeth; Bhatnagar, Julu; Oduyebo, Titilope; Free, Rebecca; Denison, Amy M.; Rabeneck, Demi B.; Ellington, Sascha; Petersen, Emily; Gary, Joy; Hale, Gillian; Keating, M. Kelly; Martines, Roosecelis B.; Muehlenbachs, Atis; Ritter, Jana; Lee, Ellen; Davidson, Alexander; Conners, Erin; Scotland, Sarah; Sandhu, Kayleigh; Bingham, Andrea; Kassens, Elizabeth; Smith, Lou; St. George, Kirsten; Ahmad, Nina; Tanner, Mary; Beavers, Suzanne; Miers, Brooke; VanMaldeghem, Kelley; Khan, Sumaiya; Rabe, Ingrid; Gould, Carolyn; Meaney-Delman, Dana; Honein, Margaret A.; Shieh, Wun-Ju; Jamieson, Denise J.; Fischer, Marc; Zaki, Sherif R.
MMWR. Morbidity and mortality weekly report, 06/2017, Letnik: 66, Številka: 24Journal Article, Newsletter
Zika virus infection during pregnancy can cause congenital microcephaly and brain abnormalities (1), and detection of Zika virus RNA in clinical and tissue specimens can provide definitive laboratory evidence of recent Zika virus infection. Whereas duration of viremia is typically short, prolonged detection of Zika virus RNA in placental, fetal, and neonatal brain tissue has been reported and can provide key diagnostic information by confirming recent Zika virus infection (2). In accordance with recent guidance (3,4), CDC provides Zika virus testing of placental and fetal tissues in clinical situations where this information could add diagnostic value. This report describes the evaluation of formalin-fixed paraffin-embedded (FFPE) tissue specimens tested for Zika virus infection in 2016 and the contribution of this testing to the public health response. Among 546 live births with possible maternal Zika virus exposure, for which placental tissues were submitted by the 50 states and District of Columbia (DC), 60 (11%) were positive by Zika virus reverse transcription-polymerase chain reaction (RT-PCR). Among 81 pregnancy losses for which placental and/or fetal tissues were submitted, 18 (22%) were positive by Zika virus RT-PCR. Zika virus RT-PCR was positive on placental tissues from 38/363 (10%) live births with maternal serologic evidence of recent unspecified flavivirus infection and from 9/86 (10%) with negative maternal Zika virus immunoglobulin M (IgM) where possible maternal exposure occurred >12 weeks before serum collection. These results demonstrate that Zika virus RT-PCR testing of tissue specimens can provide a confirmed diagnosis of recent maternal Zika virus infection.
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Vir: Osebne bibliografije
in: SICRIS
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