An observational study in HIV, Zika Virus and Pregnant Women, sponsored by Westat. Completed at 11 sites in 3 countries. Open to female participants aged 15 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-01-14.
Sponsored by Westat · Observational
The purpose of this study is to compare the incidence of Zika virus (ZIKV) infection among pregnant women with and without Human Immunodeficiency Virus (HIV) infection and to determine the risk of adverse maternal and child outcomes associated with ZIKV/HIV co-infection across clinical sites in the continental United States (U.S.), Puerto Rico (P.R.) and Brazil.
This is a two-phase prospective international cohort study of pregnant women and their infants from those pregnancies whose goals are to compare the incidence of ZIKV infection among pregnant women with and without HIV infection and to determine the risk of adverse maternal and child outcomes associated with ZIKV/HIV co-infection across clinical sites in the continental U.S., P.R. and Brazil.
Phase I will enroll pregnant women/infant pairs who are: (1) infected with HIV only; (2) infected with ZIKV only; (3) infected with HIV and ZIKV; and (4) not infected with HIV or ZIKV. Phase I will assess the feasibility of enrolling a total of 200 pregnant women/infant pairs within a year, with a target of 150 HIV-infected women, 50 HIV-uninfected women from the continental U.S. sites only, and a minimum of 20 who are co-infected with HIV and ZIKV by the end of pregnancy.
Should the feasibility of Phase I prove successful, Phase II will commence by enrolling up to 1,800 additional pregnant women/infant pairs to the 4 groups described above. The comparison group of HIV-uninfected pregnant women/infant pairs from P.R and Brazil (ZIKV-infected and uninfected) will be obtained from data collected in the concurrent International Prospective Observational Cohort Study of Zika in Infants and Pregnancy (ZIP study).
All HIV-infected and uninfected study participants will be tested for ZIKV. Enrolled women will be followed throughout their pregnancy and up to six weeks postpartum. Infants born to enrolled women will be followed for a full year after birth. Thereafter, the infants born to women at continental U.S. and P.R. sites also implementing the Surveillance Monitoring for Antiretroviral Therapy (ART) Toxicities (SMARTT) study may be followed up yearly until adulthood through SMARTT depending on the availability of funds.
Maternal: HIV infected or uninfected (the latter in the continental U.S only) pregnant women, ages 15 years and older, residing in a geographic area accessible to a research site in Brazil, Puerto Rico or the continental U.S., meet the ZIKV infection risk criteria and are less than 18 weeks GA or any GA if presenting with acute ZIKV-like symptoms and have confirmed ZIKV infection by positive ZIKV RNA detection at the Screening visit.
Infant: All infants born to women while enrolled in this study if the parent(s)/legal guardian(s) consents for the infant's participation. Infants may be in one of the following groups: a) HIV infected only; b) ZIKV infected only; c) HIV and ZIKV infected; or d) HIV and ZIKV uninfected
Maternal
Has met one of the following three ZIKV-exposure risk categories:
Household member has been diagnosed with ZIKV infection or has traveled since the woman's last menstrual period (LMP) to a country or U.S. territory with active, cautionary, or previously active or cautionary ZIKV transmission.
Infant
Exclusion Criteria:
Maternal:
Infant:
•Enrolled in other clinical research (including other ZIKV research) requiring blood collection, which in combination with HIV ZIP evaluations, would exceed three mL per kg in an eight week period and/or blood collection would be required more frequently than two times per week.
Pregnant women with HIV infection only
Pregnant women with ZIKV infection only
Pregnant women with HIV and ZIKV infection
Pregnant women without HIV or ZIKV infection
Infants of women with HIV infection during pregnancy
Infants of women with ZIKV infection during pregnancy
Infants of women with HIV and ZIKV infection during pregnancy
Infants of women without HIV or ZIKV infection during pregnancy
Enrollment (150 HIV-infected and 50 HIV-uninfected Pregnant Women Within One Year, With a Minimum of 20 of These Women Having HIV/ZIKV Co-infection by Their End of Pregnancy).
This outcome measured feasibility of enrolling 150 pregnant women living with HIV and 50 pregnant women without HIV, with a minimum of 20 of these women having HIV/ZIKV co-infection by their end of pregnancy
Time frame: At the time of delivery of all those enrolled up to 1 year after the first enrollment
Viral Suppression (in HIV-infected Women With ZIKV Co-infection Compared to Those Without ZIKV Co-infection During Pregnancy) at the Time of Delivery.
This outcome intended to measure HIV suppression at the time of delivery among women living with HIV with and without ZIKV infection during pregnancy. Note there were no women with ZIKV infection in pregnancy. Viral suppression was defined at different thresholds (\<40 copies/mL, \<400 copies/mL, \<1000 copies/mL).
Time frame: Maternal viral load at delivery
Incidence of ZIKV Infection (Among Pregnant Women With HIV Infection Compared to Those Without HIV Infection).
Cumulative incidence of ZIKV infection during pregnancy (among pregnant women with HIV infection compared to those without HIV infection).
Time frame: Maternal baseline to delivery
Incidence of Adverse Pregnancy Outcomes (in Women Co-infected With HIV and ZIKV, Women Infected With Either HIV or ZIKV Alone, and Doubly Uninfected Women).
Adverse pregnancy outcomes included miscarriage, stillbirth and preterm delivery. Note there were no women with ZIKV infection in pregnancy. Miscarriage was defined as fetal demise at \<20 weeks of gestation. Stillbirth was defined as fetal demise at ≥20 weeks of gestation. Preterm delivery was defined as delivery at \<37 weeks of gestation.
Time frame: At time of delivery
Incidence of Vertical Transmission of HIV and/or ZIKV (in Women Co-infected With HIV and ZIKV and Women Infected With Either HIV or ZIKV Alone).
Cumulative incidence of confirmed HIV infection among enrolled infants. Note there were no women with ZIKV infection in pregnancy so therefore no risk of transmission of ZIKV to any infants.
Time frame: Infant birth to 12 months
Incidence of Congenital Malformations (Among Offspring of Women Co-infected With HIV and ZIKV, Women Infected With Either HIV or ZIKV Alone, and Doubly Uninfected Women).
Cumulative incidence of congenital malformations. Note there were no women with ZIKV infection in pregnancy. Observed major congenital malformations included: anhydramnios, cerebral ventriculomegaly, clubfoot (unresolved), Down syndrome, hydrops, hypospadias, patient ductus arteriosus, polydactyly (left foot), Potter syndrome, short stature, syndactyly (left foot, 1st and 2nd toes). Observed minor congenital malformations included: clubfoot (resolved), cryptorchidism (bilateral), dislocated hip, heart defect (patent foramen ovale), heart murmur (unresolved), hemangioma, hip dysplasia, hydrocele, inguinal hernia, head circumference -3 ≤ z-score \<-2, persistent ductus arteriosus (resolved), plagiocephaly, restrictive ductus arteriosus, renal pyelectasis, sacral dimple, small perimembranous ventricular septal defect, stenosis of nasolacrimal duct, umbilical hernia.
Time frame: Infant birth, 3 months
Incidence of Other Adverse Outcomes Among Offspring of Women Co-infected With HIV and ZIKV, Women Infected With Either HIV or ZIKV Alone.
Other adverse outcomes included microcephaly, neonatal dealth, central nervous system (CNS) malformation, hydrops, and ocular abnormalities. Note there were no women with ZIKV infection in pregnancy. Microcephaly was defined as head circumference less than a z-score of -3 at birth or 3 month visit. Neonatal death was defined as death within 28 days of life. Observed CNS malformations included: cerebral ventriculomegaly. Ocular abnormalities included both structural and functional ophthalmologic abnormalities.
Time frame: Infant birth to 12 months
Weight Among Children With or Without in Utero Exposure to HIV and/or ZIKV
Weight as a measure of growth. Note there were no women with ZIKV infection in pregnancy.
Time frame: Infant Birth, 3 months, 6 months, 12 months
Length and Head Circumference Among Children With and Without in Utero Exposure to HIV and/or ZIKV
Length and head circumference as measures of growth. Note there were no women with ZIKV infection in pregnancy.
Time frame: Infant Birth, 3 months, 6 months, 12 months
Audiologic Function Among Children With or Without in Utero Exposure to HIV and/or ZIKV
Audiologic function as assessed by OAE test reported. Note there were no women with ZIKV infection in pregnancy.
Time frame: Within one month of infant birth, 3 months, 6 months, 12 months
Ophthalmologic Structure and Function Among Children With or Without in Utero Exposure to HIV and/or ZIKV
Ocular abnormalities included both structural and functional ophthalmologic abnormalities. Note there were no women with ZIKV infection in pregnancy.
Time frame: Within one month of infant birth, 12 months;
Neurodevelopment Among Children With or Without in Utero Exposure to HIV and/or ZIKV
Infant neurodevelopment was assessed by either the Bayley III or Ages and Stages Questionnaires- 3rd Edition. Combined results reported. Note there were no women with ZIKV infection in pregnancy.
Time frame: Infant 3 months, 6 months, 12 months
| Milestone | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|---|---|---|---|
| Started | 174 | 0 | 0 | 26 | 170 | 0 | 0 | 25 |
| Completed | 168 | 0 | 0 | 23 | 155 | 0 | 0 | 19 |
| Not completed | 6 | 0 | 0 | 3 | 15 | 0 | 0 | 6 |
This outcome measured feasibility of enrolling 150 pregnant women living with HIV and 50 pregnant women without HIV, with a minimum of 20 of these women having HIV/ZIKV co-infection by their end of pregnancy
| Participants | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV |
|---|---|---|---|---|
| Enrollment (150 HIV-infected and 50 HIV-uninfected Pregnant Women Within One Year, With a Minimum of 20 of These Women Having HIV/ZIKV Co-infection by Their End of Pregnancy). | 174 | 0 | 0 | 26 |
This outcome intended to measure HIV suppression at the time of delivery among women living with HIV with and without ZIKV infection during pregnancy. Note there were no women with ZIKV infection in pregnancy. Viral suppression was defined at different thresholds (\<40 copies/mL, \<400 copies/mL, \<1000 copies/mL).
| Participants | Women With HIV Only | Women With HIV and ZIKV |
|---|---|---|
| VL <40 copies/mL — Yes | 101 | — |
| VL <40 copies/mL — No | 22 | — |
| VL <40 copies/mL — Missing | 51 | — |
| VL <400 copies/mL — Yes | 110 | — |
| VL <400 copies/mL — No | 13 | — |
| VL <400 copies/mL — Missing | 51 | — |
| VL <1000 copies/mL — Yes | 111 | — |
| VL <1000 copies/mL — No | 12 | — |
| VL <1000 copies/mL — Missing | 51 | — |
Cumulative incidence of ZIKV infection during pregnancy (among pregnant women with HIV infection compared to those without HIV infection).
| Participants | Women With HIV | Women Without HIV |
|---|---|---|
| Incidence of ZIKV Infection (Among Pregnant Women With HIV Infection Compared to Those Without HIV Infection). | 0 | 0 |
Adverse pregnancy outcomes included miscarriage, stillbirth and preterm delivery. Note there were no women with ZIKV infection in pregnancy. Miscarriage was defined as fetal demise at \<20 weeks of gestation. Stillbirth was defined as fetal demise at ≥20 weeks of gestation. Preterm delivery was defined as delivery at \<37 weeks of gestation.
| Participants | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV |
|---|---|---|---|---|
| Miscarriage | 3 | — | — | 0 |
| Stillbirth | 1 | — | — | 0 |
| Preterm delivery | 16 | — | — | 1 |
Cumulative incidence of confirmed HIV infection among enrolled infants. Note there were no women with ZIKV infection in pregnancy so therefore no risk of transmission of ZIKV to any infants.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV |
|---|---|---|---|
| Incidence of Vertical Transmission of HIV and/or ZIKV (in Women Co-infected With HIV and ZIKV and Women Infected With Either HIV or ZIKV Alone). | 0 | — | — |
Cumulative incidence of congenital malformations. Note there were no women with ZIKV infection in pregnancy. Observed major congenital malformations included: anhydramnios, cerebral ventriculomegaly, clubfoot (unresolved), Down syndrome, hydrops, hypospadias, patient ductus arteriosus, polydactyly (left foot), Potter syndrome, short stature, syndactyly (left foot, 1st and 2nd toes). Observed minor congenital malformations included: clubfoot (resolved), cryptorchidism (bilateral), dislocated hip, heart defect (patent foramen ovale), heart murmur (unresolved), hemangioma, hip dysplasia, hydrocele, inguinal hernia, head circumference -3 ≤ z-score \<-2, persistent ductus arteriosus (resolved), plagiocephaly, restrictive ductus arteriosus, renal pyelectasis, sacral dimple, small perimembranous ventricular septal defect, stenosis of nasolacrimal duct, umbilical hernia.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Major malformations | 6 | — | — | 2 |
| Minor malformations | 32 | — | — | 5 |
Other adverse outcomes included microcephaly, neonatal dealth, central nervous system (CNS) malformation, hydrops, and ocular abnormalities. Note there were no women with ZIKV infection in pregnancy. Microcephaly was defined as head circumference less than a z-score of -3 at birth or 3 month visit. Neonatal death was defined as death within 28 days of life. Observed CNS malformations included: cerebral ventriculomegaly. Ocular abnormalities included both structural and functional ophthalmologic abnormalities.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Microcephaly | 0 | — | — | 0 |
| Neonatal death | 1 | — | — | 0 |
| CNS malformations | 0 | — | — | 1 |
| Hydrops | 2 | — | — | 0 |
| Ocular abnormalities | 18 | — | — | 5 |
Weight as a measure of growth. Note there were no women with ZIKV infection in pregnancy.
| kg | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Weight at birth | 3.2 (2.8 to 3.4) | — | — | 3.2 (2.9 to 3.7) |
| Weight at 3 months | 5.9 (5.4 to 6.6) | — | — | 5.7 (5.3 to 6.4) |
| Weight at 6 months | 7.7 (7.0 to 8.4) | — | — | 8.2 (7.0 to 9.0) |
| Weight at 12 months | 10.0 (9.0 to 10.7) | — | — | 9.8 (8.8 to 10.9) |
Length and head circumference as measures of growth. Note there were no women with ZIKV infection in pregnancy.
| cm | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Length at birth | 48.2 (47.0 to 50.0) | — | — | 48.3 (46.9 to 52.0) |
| Length at 3 months | 58.5 (57.0 to 60.5) | — | — | 59.5 (55.8 to 61.0) |
| Length at 6 months | 65.0 (64.0 to 67.0) | — | — | 67.0 (62.0 to 69.5) |
| Length at 12 months | 75.0 (73.0 to 77.5) | — | — | 74.2 (71.5 to 77.2) |
| Head circumference at birth | 34.0 (33.0 to 35.0) | — | — | 34.0 (33.0 to 35.0) |
| Head circumference at 3 months | 40.0 (39.0 to 41.0) | — | — | 40.3 (39.0 to 41.0) |
| Head circumference at 6 months | 43.0 (42.0 to 44.0) | — | — | 43.8 (43.0 to 44.2) |
| Head circumference at 12 months | 46.0 (45.0 to 47.0) | — | — | 46.3 (45.5 to 47.0) |
Audiologic function as assessed by OAE test reported. Note there were no women with ZIKV infection in pregnancy.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Right ear (Birth) — Passed | 112 | — | — | 3 |
| Right ear (Birth) — Failed | 12 | — | — | 0 |
| Right ear (Birth) — Test result not available | 46 | — | — | 22 |
| Right ear (3 months) — Passed | 99 | — | — | 17 |
| Right ear (3 months) — Failed | 11 | — | — | 1 |
| Right ear (3 months) — Test result not available | 60 | — | — | 7 |
| Right ear (6 months) — Passed | 102 | — | — | 14 |
| Right ear (6 months) — Failed | 21 | — | — | 1 |
| Right ear (6 months) — Test result not available | 47 | — | — | 10 |
| Right ear (12 months) — Passed | 84 | — | — | 13 |
| Right ear (12 months) — Failed | 20 | — | — | 2 |
| Right ear (12 months) — Test result not available | 66 | — | — | 10 |
| Left ear (Birth) — Passed | 108 | — | — | 3 |
| Left ear (Birth) — Failed | 16 | — | — | 0 |
| Left ear (Birth) — Test result not available | 46 | — | — | 22 |
| Left ear (3 months) — Passed | 100 | — | — | 17 |
| Left ear (3 months) — Failed | 10 | — | — | 1 |
| Left ear (3 months) — Test result not available | 60 | — | — | 7 |
| Left ear (6 months) — Passed | 103 | — | — | 14 |
| Left ear (6 months) — Failed | 20 | — | — | 1 |
| Left ear (6 months) — Test result not available | 47 | — | — | 10 |
| Left ear (12 months) — Passed | 84 | — | — | 13 |
| Left ear (12 months) — Failed | 21 | — | — | 2 |
| Left ear (12 months) — Test result not available | 65 | — | — | 10 |
Ocular abnormalities included both structural and functional ophthalmologic abnormalities. Note there were no women with ZIKV infection in pregnancy.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Ocular abnormalities | 18 | — | — | 5 |
| No ocular abnormalities | 152 | — | — | 20 |
Infant neurodevelopment was assessed by either the Bayley III or Ages and Stages Questionnaires- 3rd Edition. Combined results reported. Note there were no women with ZIKV infection in pregnancy.
| Participants | Infants of Women With HIV Only | Infants of Women With ZIKV Only | Infants of Women With HIV and ZIKV | Infants of Women Without HIV or ZIKV |
|---|---|---|---|---|
| Failed screening test at 3 months — Yes | 2 | — | — | 2 |
| Failed screening test at 3 months — No | 159 | — | — | 20 |
| Failed screening test at 3 months — Missing | 9 | — | — | 3 |
| Failed screening test at 6 months — Yes | 2 | — | — | 0 |
| Failed screening test at 6 months — No | 154 | — | — | 17 |
| Failed screening test at 6 months — Missing | 14 | — | — | 8 |
| Failed screening test at 12 months — Yes | 3 | — | — | 0 |
| Failed screening test at 12 months — No | 134 | — | — | 16 |
| Failed screening test at 12 months — Missing | 33 | — | — | 9 |
Collected over Through study completion, up to 1 year of follow-up of live-born infant.. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Women With HIV Only | 1/174 (0.6%) | 0/174 (0%) | 0/174 (0%) |
| Women With ZIKV Only | — | — | — |
| Women With HIV and ZIKV | — | — | — |
| Women Without HIV or ZIKV | 0/26 (0%) | 0/26 (0%) | 0/26 (0%) |
| Infants of Women With HIV Only | 2/170 (1.2%) | 0/170 (0%) | 0/170 (0%) |
| Infants of Women With ZIKV Only | — | — | — |
| Infants of Women With HIV and ZIKV | — | — | — |
| Infants of Women Without HIV or ZIKV | 0/25 (0%) | 0/25 (0%) | 0/25 (0%) |
At baseline (start of study) pregnant women were enrolled. Baseline characteristics of these women enrolled during pregnancy are therefore presented in this table. Live-born infants of these women were subsequently followed for one year if consent was obtained.
| Age, Continuous(years) | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Total |
|---|---|---|---|---|---|
| Median | 28.2 (23.2 to 32.9) | — | — | 29.2 (23.9 to 32.7) | 28.3 (23.2 to 32.8) |
| Sex: Female, Male(Participants) | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Total |
|---|---|---|---|---|---|
| Female | 174 | — | — | 26 | 200 |
| Male | 0 | — | — | 0 | 0 |
| Race/Ethnicity, Customized(Participants) | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Total |
|---|---|---|---|---|---|
| White (US) | 4 | 0 | 0 | 6 | 10 |
| Black (US) | 2 | 0 | 0 | 6 | 8 |
| Asian (US) | 0 | 0 | 0 | 2 | 2 |
| More than one race (US) | 1 | 0 | 0 | 2 | 3 |
| Other (US) | 0 | 0 | 0 | 3 | 3 |
| Not reported (US) | 3 | 0 | 0 | 7 | 10 |
| White (Brazil) | 39 | 0 | 0 | 0 | 39 |
| Black (Brazil) | 40 | 0 | 0 | 0 | 40 |
| Mulatto (Brazil) | 8 | 0 | 0 | 0 | 8 |
| Amarela/Yellow (Brazil) | 1 | 0 | 0 | 0 | 1 |
| Indigenous (Brazil) | 2 | 0 | 0 | 0 | 2 |
| Mixed Black (Brazil) | 51 | 0 | 0 | 0 | 51 |
| More than one race (Brazil) | 21 | 0 | 0 | 0 | 21 |
| Region of Enrollment(participants) | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Total |
|---|---|---|---|---|---|
| Puerto Rico | 9 | — | — | 0 | 9 |
| United States | 1 | — | — | 26 | 27 |
| Brazil | 164 | — | — | 0 | 164 |
| Gestational age at enrollment(weeks) | Women With HIV Only | Women With ZIKV Only | Women With HIV and ZIKV | Women Without HIV or ZIKV | Total |
|---|---|---|---|---|---|
| Median | 14.5 (12.0 to 16.0) | — | — | 16.0 (14.0 to 17.0) | 15.0 (12.0 to 16.0) |
Documents are hosted by the registry — open the source record to download them.
Plan to share: Yes — 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. Data from the ZIP study, conducted in Zika-endemic areas, may be merged with HIV ZIP. In most cases, ZIP will have the exact same infant assessments as HIV ZIP.
Supporting information: Study protocol, Icf, Csr
This study is completed, as verified in Jan 2022. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Westat