Zika in Infants and Pregnancy (ZIP)
International Prospective Observational Cohort Study of Zika in Infants
1 other identifier
observational
6,461
6 countries
10
Brief Summary
The overall objective of this multisite, multicountry Zika in Infants and Pregnancy (ZIP) study is to assess the strength of the association between Zika virus infection (ZIKV) during pregnancy and adverse maternal/fetal outcomes and the risk of vertical transmission. The study will prospectively enroll a cohort of pregnant women up to 17 weeks and 6 days gestation and subjects at any gestational age with acute Zika infection, confirmed by serology or PCR (polymerase chain reaction) test. The study will follow these women through their pregnancy to identify for clinical evidence of acute ZIKV, while controlling for potential confounders. Outcomes in the women, the developing fetus, and infants will be assessed. All protocol-specified data will be recorded and entered in a central data management system for the purposes of analysis of composite data from the study.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jun 2016
Longer than P75 for all trials
10 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2016
CompletedFirst Submitted
Initial submission to the registry
July 20, 2016
CompletedFirst Posted
Study publicly available on registry
August 5, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 5, 2020
CompletedStudy Completion
Last participant's last visit for all outcomes
May 5, 2020
CompletedAugust 19, 2021
August 1, 2021
3.9 years
July 20, 2016
August 12, 2021
Conditions
Keywords
Outcome Measures
Primary Outcomes (16)
Incidence of congenital malformations for ZIKV infected participants
To measure the incidence of congenital malformations in fetuses/infants.
Time of birth of infant
Incidence of congenital malformations for ZIKV infected participants
To measure the incidence of congenital malformations in fetuses/infants.
3 months of age
Incidence of congenital malformations for ZIKV infected participants
To measure the incidence of congenital malformations in fetuses/infants.
6 months of age
Incidence of congenital malformations for ZIKV infected participants
To measure the incidence of congenital malformations in fetuses/infants.
12 months of age
Incidence of adverse fetal outcomes for ZIKV infected participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, central nervous system (CNS) malformations, hydrops, and ocular abnormalities) in fetuses/infants.
Time of birth of infant
Incidence of adverse fetal outcomes for ZIKV infected participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, central nervous system (CNS) malformations, hydrops, and ocular abnormalities) in fetuses/infants.
3 months of age
Incidence of adverse fetal outcomes for ZIKV infected participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, central nervous system (CNS) malformations, hydrops, and ocular abnormalities) in fetuses/infants.
6 months of age
Incidence of adverse fetal outcomes for ZIKV infected participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, central nervous system (CNS) malformations, hydrops, and ocular abnormalities) in fetuses/infants.
12 months of age
Incidence of congenital malformations for ZIKV symptomatic participants
To measure the incidence of congenital malformations in fetuses/infants.
Time of birth of infant
Incidence of congenital malformations for ZIKV symptomatic participants
To measure the incidence of congenital malformations in fetuses/infants.
3 months of age
Incidence of congenital malformations for ZIKV symptomatic participants
To measure the incidence of congenital malformations in fetuses/infants.
6 months of age
Incidence of congenital malformations for ZIKV symptomatic participants
To measure the incidence of congenital malformations in fetuses/infants.
12 months of age
Incidence of adverse fetal outcomes for ZIKV symptomatic participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, CNS malformations, hydrops, and ocular abnormalities) in fetuses/infants.
Time of birth of infant
Incidence of adverse fetal outcomes for ZIKV symptomatic participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, CNS malformations, hydrops, and ocular abnormalities) in fetuses/infants.
3 months of age
Incidence of adverse fetal outcomes for ZIKV symptomatic participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, CNS malformations, hydrops, and ocular abnormalities) in fetuses/infants.
6 months of age
Incidence of adverse fetal outcomes for ZIKV symptomatic participants
To measure the incidence of adverse fetal outcomes (including microcephaly, fetal demise, neonatal death, CNS malformations, hydrops, and ocular abnormalities) in fetuses/infants.
12 months of age
Study Arms (2)
ZIKV infected women
The study will prospectively enroll pregnant women up to 17 weeks and 6 days gestation and follow them through their pregnancy for clinical evidence of acute ZIKV infection while controlling for potential confounders. All pregnant women will be followed throughout the pregnancy, delivery, and 6 weeks postpartum. Outcomes in women, the developing fetus, and infants will be assessed.
Control (uninfected women)
The women who remain uninfected will serve as the internal comparison group. The infants who remain uninfected at delivery and throughout the follow-up period will serve as the internal comparison group.
Eligibility Criteria
The study will recruit up to 10,000 pregnant women up to 17 weeks and 6 days gestation and subjects at any gestational age with acute Zika infection, confirmed by serology or PCR (polymerase chain reaction) test from ZIKV-endemic regions and follow them longitudinally to study the impact of incident ZIKV during pregnancy on maternal, fetal, and newborn outcomes. Researchers will identify cases of incident ZIKV among pregnant women by monitoring for symptoms of Zika-like illness and performing serial laboratory sampling for diagnosis of seroconversion and viral shedding. After delivery, infants born with evidence of ZIKV or born to mothers diagnosed with incident virus infection will be followed in a prospective longitudinal cohort for at least 1 year. In addition, a control group of infants born to mothers without evidence of ZIKV during pregnancy will be followed.
You may qualify if:
- Informed consent
- Age \>15 years
- Assent and consent as required per local country regulations
- Confirmation of pregnancy by beta human chorionic gonadotropin (hCG) measurement in blood/urine or ultrasound confirmation of pregnancy with fetal heart tones present
- Pregnant women up to 17 weeks and 6 days gestation and subjects at any gestational age with acute Zika infection, confirmed by serology or PCR (polymerase chain reaction) test.
You may not qualify if:
- Women who cannot adhere to proposed testing schedule
- Pregnant women enrolled in other research including other ZIKV research
- All infants born to women enrolled in the observational cohort are eligible for enrollment
- Mother or custodial parent does not consent to have child participate
- Infants born to mothers that are not part of the ZIP cohort study
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (10)
Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz/MS; Rue Waldemar Falcao
Salvador, Estado de Bahia, 40296-710, Brazil
Departamento de Medicina Tropical da Universidade Federal de Pernambuco-UFPE
Recife, Pernambuco, CEP: 50670-901, Brazil
Instituto Fernandes Figueira - FIOCRUZ
Rio de Janeiro, Rio de Janeiro, 22250-020, Brazil
Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900 - Monte Alegre
Ribeirão Preto, São Paulo, 14049-900, Brazil
Centro Medico Imbanaco
Cali, Colombia
Fundación para la Alimentación y Nutrición de Centro América y Panamá (INCAP)
Guatemala City, Guatemala
MINSA Central
Managua, 16064, Nicaragua
Universidad Peruana
Lima, Peru
University of Puerto Rico Medical Sciences Campus
San Juan, 00921, Puerto Rico
University of Puerto Rico - Recinto de Río Piedras
San Juan, 00936, Puerto Rico
Related Publications (28)
WHO statement on the first meeting of the International Health Regulations (2005) (IHR 2005) Emergency Committee on Zika virus and observed increase in neurological disorders and neonatal malformations; 1 February 2016. Available at http://www.who.int/ mediacentre/news/statements/2016/1st-emergency-committee-zika/en/
BACKGROUNDPetersen EE, Staples JE, Meaney-Delman D, Fischer M, Ellington SR, Callaghan WM, Jamieson DJ. Interim Guidelines for Pregnant Women During a Zika Virus Outbreak--United States, 2016. MMWR Morb Mortal Wkly Rep. 2016 Jan 22;65(2):30-3. doi: 10.15585/mmwr.mm6502e1.
PMID: 26796813BACKGROUNDPowles R, Smith C, Milan S, Treleaven J, Millar J, McElwain T, Gordon-Smith E, Milliken S, Tiley C. Human recombinant GM-CSF in allogeneic bone-marrow transplantation for leukaemia: double-blind, placebo-controlled trial. Lancet. 1990 Dec 8;336(8728):1417-20. doi: 10.1016/0140-6736(90)93111-2.
PMID: 1978880BACKGROUNDCDC. Chikungunya virus. Atlanta, GA: US Department of Health and Human Services, CDC; 2015. http://www.cdc.gov/chikungunya/hc/clinicalevaluation.html
BACKGROUNDDengue: Guidelines for Diagnosis, Treatment, Prevention and Control: New Edition. Geneva: World Health Organization; 2009. Available from http://www.ncbi.nlm.nih.gov/books/NBK143157/
PMID: 23762963BACKGROUNDCDC Zika Virus; Areas with Zika http://www.cdc.gov/zika/geo/index.html
BACKGROUNDOliveira Melo AS, Malinger G, Ximenes R, Szejnfeld PO, Alves Sampaio S, Bispo de Filippis AM. Zika virus intrauterine infection causes fetal brain abnormality and microcephaly: tip of the iceberg? Ultrasound Obstet Gynecol. 2016 Jan;47(1):6-7. doi: 10.1002/uog.15831. No abstract available.
PMID: 26731034BACKGROUNDCDC. West Nile virus: insect repellent use & safety. Atlanta, GA: US Department of Health and Human Services, CDC; 2015. http://www.cdc.gov/westnile/faq/repellent.html.
BACKGROUNDCDC. Zika virus. Atlanta, GA: US Department of Health and Human Services, CDC; 2015. http://www.cdc.gov/zika/index.html
BACKGROUNDOduyebo T, Petersen EE, Rasmussen SA, Mead PS, Meaney-Delman D, Renquist CM, Ellington SR, Fischer M, Staples JE, Powers AM, Villanueva J, Galang RR, Dieke A, Munoz JL, Honein MA, Jamieson DJ. Update: Interim Guidelines for Health Care Providers Caring for Pregnant Women and Women of Reproductive Age with Possible Zika Virus Exposure - United States, 2016. MMWR Morb Mortal Wkly Rep. 2016 Feb 12;65(5):122-7. doi: 10.15585/mmwr.mm6505e2.
PMID: 26866840BACKGROUNDBabaliche P, Doshi D. Catching Dengue Early: Clinical Features and Laboratory Markers of Dengue Virus Infection. J Assoc Physicians India. 2015 May;63(5):38-41.
PMID: 26591143BACKGROUNDWahala WM, Silva AM. The human antibody response to dengue virus infection. Viruses. 2011 Dec;3(12):2374-95. doi: 10.3390/v3122374. Epub 2011 Nov 25.
PMID: 22355444BACKGROUNDGibney KB, Edupuganti S, Panella AJ, Kosoy OI, Delorey MJ, Lanciotti RS, Mulligan MJ, Fischer M, Staples JE. Detection of anti-yellow fever virus immunoglobulin m antibodies at 3-4 years following yellow fever vaccination. Am J Trop Med Hyg. 2012 Dec;87(6):1112-5. doi: 10.4269/ajtmh.2012.12-0182. Epub 2012 Oct 29.
PMID: 23109371BACKGROUNDRoehrig JT, Nash D, Maldin B, Labowitz A, Martin DA, Lanciotti RS, Campbell GL. Persistence of virus-reactive serum immunoglobulin m antibody in confirmed west nile virus encephalitis cases. Emerg Infect Dis. 2003 Mar;9(3):376-9. doi: 10.3201/eid0903.020531.
PMID: 12643836BACKGROUNDhttp://www.salud.gov.pr/Estadisticas-Registros-y-Publicaciones/Informes %20Arbovirales/Reporte%20ArboV%20semana%204-2016.pdf
BACKGROUNDChervenak FA, Jeanty P, Cantraine F, Chitkara U, Venus I, Berkowitz RL, Hobbins JC. The diagnosis of fetal microcephaly. Am J Obstet Gynecol. 1984 Jul 1;149(5):512-7. doi: 10.1016/0002-9378(84)90027-9.
PMID: 6742021BACKGROUNDChervenak FA, Rosenberg J, Brightman RC, Chitkara U, Jeanty P. A prospective study of the accuracy of ultrasound in predicting fetal microcephaly. Obstet Gynecol. 1987 Jun;69(6):908-10.
PMID: 3554067BACKGROUNDKurtz AB, Wapner RJ, Rubin CS, Cole-Beuglet C, Ross RD, Goldberg BB. Ultrasound criteria for in utero diagnosis of microcephaly. J Clin Ultrasound. 1980 Feb;8(1):11-6. doi: 10.1002/jcu.1870080104.
PMID: 6766470BACKGROUNDHutchon DJ. Fetal ultrasound biometry: 1. Head reference values. Br J Obstet Gynaecol. 1999 Aug;106(8):875-6. doi: 10.1111/j.1471-0528.1999.tb08417.x. No abstract available.
PMID: 10453845BACKGROUNDBerger I. Prenatal microcephaly: can we be more accurate? J Child Neurol. 2009 Jan;24(1):97-100. doi: 10.1177/0883073808321045.
PMID: 19168823BACKGROUNDJulie A Boom; Microcephaly in infants and children: Etiology and evaluation UpToDate http://www.uptodate.com/contents/microcephaly-in-infants-and-children- etiology-and-evaluation?source=machineLearning&search=microcephaly+in +pregnacy&selectedTitle=2~130§ionRank=3&anchor=H55603463#H55603463 Accessed on February 16, 2016
BACKGROUNDTolmie JL, McNay M, Stephenson JB, Doyle D, Connor JM. Microcephaly: genetic counselling and antenatal diagnosis after the birth of an affected child. Am J Med Genet. 1987 Jul;27(3):583-94. doi: 10.1002/ajmg.1320270311.
PMID: 3307411BACKGROUNDAtkinson B, Hearn P, Afrough B, Lumley S, Carter D, Aarons EJ, Simpson AJ, Brooks TJ, Hewson R. Detection of Zika Virus in Semen. Emerg Infect Dis. 2016 May;22(5):940. doi: 10.3201/eid2205.160107. No abstract available.
PMID: 27088817BACKGROUNDMedscape Medical News; FDA Issues Guidance to Protect Blood Supply From Zika Virus http://www.medscape.com/viewarticle/858976? nlid=100283_3901&src=wnl_newsalrt_160216_MSCPEDIT&uac=17333MK&impID=993653&faf=1
BACKGROUNDSarno M, Sacramento GA, Khouri R, do Rosario MS, Costa F, Archanjo G, Santos LA, Nery N Jr, Vasilakis N, Ko AI, de Almeida AR. Zika Virus Infection and Stillbirths: A Case of Hydrops Fetalis, Hydranencephaly and Fetal Demise. PLoS Negl Trop Dis. 2016 Feb 25;10(2):e0004517. doi: 10.1371/journal.pntd.0004517. eCollection 2016 Feb.
PMID: 26914330BACKGROUNDBrasil P, Pereira JP Jr, Moreira ME, Ribeiro Nogueira RM, Damasceno L, Wakimoto M, Rabello RS, Valderramos SG, Halai UA, Salles TS, Zin AA, Horovitz D, Daltro P, Boechat M, Raja Gabaglia C, Carvalho de Sequeira P, Pilotto JH, Medialdea-Carrera R, Cotrim da Cunha D, Abreu de Carvalho LM, Pone M, Machado Siqueira A, Calvet GA, Rodrigues Baiao AE, Neves ES, Nassar de Carvalho PR, Hasue RH, Marschik PB, Einspieler C, Janzen C, Cherry JD, Bispo de Filippis AM, Nielsen-Saines K. Zika Virus Infection in Pregnant Women in Rio de Janeiro. N Engl J Med. 2016 Dec 15;375(24):2321-2334. doi: 10.1056/NEJMoa1602412. Epub 2016 Mar 4.
PMID: 26943629BACKGROUNDLebov JF, Nason M, Stolka KB, Ximenes R, Mussi-Pinhata MM, Moye J, Zorrilla CD, Velez Vega CM, Cordero JF, Scalabrin DMF, Ko AI, Moreira MEL, Galvao LA, Britt W, Marques ETA, Balmaseda A, Harris E, Arias JF, Schultz-Cherry S, Garces AL, Krebs NF, Ochoa TJ, Ugarte-Gil CA, Fogleman E, Gabriel E, Welton M, Irizarry CM, de Moura Negrini SB, Coutinho CM, de Barros Miranda-Filho D, Montarroyos UR, Cordeiro MT, Gajewski A, Osorio JE, Figueroa L. Zika in Infants and Pregnancy (ZIP) study: results from a prospective international cohort study of prenatal Zika virus infection and adverse fetal and infant outcomes. BMC Pregnancy Childbirth. 2025 Aug 30;25(1):903. doi: 10.1186/s12884-025-07774-y.
PMID: 40885911DERIVEDLebov JF, Arias JF, Balmaseda A, Britt W, Cordero JF, Galvao LA, Garces AL, Hambidge KM, Harris E, Ko A, Krebs N, Marques ETA, Martinez AM, McClure E, Miranda-Filho DB, Moreira MEL, Mussi-Pinhata MM, Ochoa TJ, Osorio JE, Scalabrin DMF, Schultz-Cherry S, Seage GR 3rd, Stolka K, Ugarte-Gil CA, Vega CMV, Welton M, Ximenes R, Zorrilla C. International prospective observational cohort study of Zika in infants and pregnancy (ZIP study): study protocol. BMC Pregnancy Childbirth. 2019 Aug 7;19(1):282. doi: 10.1186/s12884-019-2430-4.
PMID: 31391005DERIVED
Biospecimen
maternal samples from urine, blood, genital secretions, saliva, and breast milk, and when available amniotic fluid and tissue; infant urine, blood, and saliva
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Ricardo Ximenes, MD
Departamento de Medicina Tropical da Universidade Federal de Pernambuco-UFPE
- PRINCIPAL INVESTIGATOR
William Britt, MD
University of Alabama Birmingham School of Medicine
- PRINCIPAL INVESTIGATOR
Marisa Mussi, MD
Ribeirão Preto Medical School, University of São Paulo
- PRINCIPAL INVESTIGATOR
Albert Ko, MD
Yale University, Laboratory of Epidemiology and Public Health
- PRINCIPAL INVESTIGATOR
Deolinda Scalabrin
Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz/MS
- PRINCIPAL INVESTIGATOR
Marisa Elisabeth Lopes
Instituto Fernandes Figueira - FIOCRUZ
- PRINCIPAL INVESTIGATOR
Ana Garces, MD
Fundación para la Alimentación y Nutrición de Centro América y Panamá (INCAP)
- PRINCIPAL INVESTIGATOR
Jose Cordero, MD
University of Georgia
- PRINCIPAL INVESTIGATOR
Carmen Milagros Velez Vega, PhD
University of Puerto Rico
- PRINCIPAL INVESTIGATOR
George Seage, MD
Harvard University School of Public Health
- PRINCIPAL INVESTIGATOR
Carmen Zorilla, MD
University of Puerto Rico
- PRINCIPAL INVESTIGATOR
Eva Harris, PhD
University of Californina Berkeley
- PRINCIPAL INVESTIGATOR
Angel Balmaseda
MINSA Central
- PRINCIPAL INVESTIGATOR
Juan F Arias, MD
St. Jude Children's Research Hospital
- PRINCIPAL INVESTIGATOR
Jill Lebov, PhD
RTI International
- PRINCIPAL INVESTIGATOR
Teresa Ochoa Woodell, PhD
Universidad Peruana Cayetano Heredia
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
July 20, 2016
First Posted
August 5, 2016
Study Start
June 1, 2016
Primary Completion
May 5, 2020
Study Completion
May 5, 2020
Last Updated
August 19, 2021
Record last verified: 2021-08
Data Sharing
- IPD Sharing
- Will share
- Time Frame
- IPD Sharing Time Frame: March 2022
de-identified participant data will be entered into the National Institute of Child Health and Human Development (NICHD) Data and Specimen Hub (N-DASH) system.