RESUMEN
Fungi have been observed to exhibit resistance to high levels of ionizing radiation despite sharing most DNA repair mechanisms with other eukaryotes. Radioresistance, in fact, is such a common feature in fungi that it is difficult to identify species that exhibit widely different radiosensitivities, which in turn has hampered the identification of genetic elements responsible for this resistance phenotype. Due to the inherent mutagenic properties of radiation exposure, however, this can be addressed through adaptive laboratory evolution for increased ionizing radiation resistance. Here, using the black yeast Exophiala dermatitidis, we demonstrate that resistance to γ-radiation can be greatly increased through repeated rounds of irradiation and outgrowth. Moreover, we find that the small genome size of fungi situates them as a relatively simple functional genomics platform for identification of mutations associated with ionizing radiation resistance. This enabled the identification of genetic mutations in genes encoding proteins with a broad range of functions from 10 evolved strains. Specifically, we find that greatly increased resistance to γ-radiation is achieved in E. dermatitidis through disruption of the non-homologous end-joining pathway, with three individual evolutionary paths converging to abolish this DNA repair process. This result suggests that non-homologous end-joining, even in haploid cells where homologous chromosomes are not present during much of the cell cycle, is an impediment to repair of radiation-induced lesions in this organism, and that the relative levels of homologous and non-homologous repair in a given fungal species may play a major role in its radiation resistance.
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Exophiala , Radiación Ionizante , Reparación del ADN/genética , Tolerancia a Radiación/genéticaRESUMEN
BACKGROUND: Maternal mortality rates in the United States appear to be increasing. One potential reason may be increased identification of maternal deaths after the addition of a pregnancy checkbox to the death certificate. In 2016, 4 state health departments (Georgia, Louisiana, Michigan, and Ohio) implemented a pregnancy checkbox quality assurance pilot, with technical assistance provided by the Centers for Disease Control and Prevention. The pilot aimed to improve accuracy of the pregnancy checkbox on death certificates and resultant state maternal mortality estimates. OBJECTIVE: To estimate the validity of the pregnancy checkbox on the death certificate, and to describe characteristics associated with errors using 2016 data from a 4-state quality assurance pilot. MATERIALS AND METHODS: Potential pregnancy-associated deaths were identified by linking death certificates with birth or fetal death certificates from within 1 year preceding death or by pregnancy checkbox status. Death certificates that indicated that the decedent was pregnant within 1 year of death via the pregnancy checkbox, but that did not link to a birth or fetal death certificate, were referred for active follow-up to confirm pregnancy status by either death certifier confirmation or medical record review. Descriptive statistics and 95% confidence intervals were used to examine the distributions of demographic characteristics by pregnancy confirmation category (confirmed pregnant, confirmed not pregnant, and unable to confirm). We compared the proportion confirmed pregnant and confirmed not pregnant within age, race/ethnicity, pregnancy checkbox category, and certifier type categories using a Wald test of proportions. Binomial and Poisson regression models were used to estimate prevalence ratios for having an incorrect pregnancy checkbox (false positive, false negative) by age group, race/ethnicity, pregnancy checkbox category, and certifier type. RESULTS: Among 467 potential pregnancy-associated deaths, 335 (72%) were confirmed pregnant via linkage to a birth or fetal death certificate, certifier confirmation, or review of medical records. A total of 97 women (21%) were confirmed not pregnant (false positives) and 35 (7%) were unable to be confirmed. Women confirmed pregnant were significantly younger than women confirmed not pregnant (P < .001). Deaths certified by coroners and medical examiners were more likely to be confirmed pregnant than confirmed not pregnant (P = .04). The association between decedent age category and false-positive status followed a dose-response relationship (P < .001), with increasing prevalence ratios for each increase in age category. Death certificates of non-Hispanic black women were more likely to be false positive, compared with non-Hispanic white women (prevalence ratio, 1.41; 95% confidence interval, 1.01, 1.96). The sensitivity of the pregnancy checkbox among these 4 states in 2016 was 62% and the positive predictive value was 68%. CONCLUSION: We provide a multi-state analysis of the validity of the pregnancy checkbox and highlight a need for more accurate reporting of pregnancy status on death certificates. States and other jurisdictions may increase the accuracy of their data used to calculate maternal mortality rates by implementing quality assurance processes.
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Certificado de Defunción , Muerte Materna/estadística & datos numéricos , Mortalidad Materna , Adulto , Médicos Forenses , Femenino , Humanos , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Embarazo , Estados Unidos/epidemiologíaRESUMEN
Antimicrobial drug resistance is a serious health hazard driven by overuse. Administration of antimicrobial drugs to HIV-exposed, uninfected infants, a population that is growing and at high risk for infection, is poorly studied. We therefore analyzed factors associated with antibacterial drug administration to HIV-exposed, uninfected infants during their first year of life. Our study population was 2,152 HIV-exposed, uninfected infants enrolled in the Breastfeeding, Antiretrovirals and Nutrition study in Lilongwe, Malawi, during 2004-2010. All infants were breastfed through 28 weeks of age. Antibacterial drugs were prescribed frequently (to 80% of infants), and most (67%) of the 5,329 prescriptions were for respiratory indications. Most commonly prescribed were penicillins (43%) and sulfonamides (23%). Factors associated with lower hazard for antibacterial drug prescription included receipt of cotrimoxazole preventive therapy, receipt of antiretroviral drugs, and increased age. Thus, cotrimoxazole preventive therapy may lead to fewer prescriptions for antibacterial drugs for these infants.
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Antibacterianos/administración & dosificación , Programas de Optimización del Uso de los Antimicrobianos , VIH/aislamiento & purificación , Complicaciones Infecciosas del Embarazo/prevención & control , Prescripciones/estadística & datos numéricos , Combinación Trimetoprim y Sulfametoxazol/administración & dosificación , Factores de Edad , Antirretrovirales/administración & dosificación , Profilaxis Antibiótica , Lactancia Materna , Farmacorresistencia Bacteriana , Femenino , Humanos , Lactante , Masculino , Penicilinas/administración & dosificación , Pobreza , Embarazo , Sulfonamidas/administración & dosificaciónRESUMEN
Objectives The magnitude, characteristics, and morbidity of term (≥37 weeks gestation) newborns that are small-for-gestational-age (SGA) in the U.S. are underexplored. We sought to examine characteristics and trends for SGA-coded term newborns in the U.S. Methods Data were obtained from the Nationwide Inpatient Sample, a nationally representative database of hospital stays in the U.S. from 2002 to 2011. Term, singleton newborns with SGA codes were identified and examined over the study period. Demographic characteristics were compared for term newborns according to presence of SGA codes using χ2 tests. Odds ratios (OR) were calculated to compare morbidities between the two groups, adjusting for relevant demographic and clinical variables. Results In 2011, 15 per 1000 term newborns in the U.S. were coded as SGA, a 29.9 % increase since 2002. Compared with other term newborns, SGA term newborns were significantly (p < 0.05) more likely to be female, receive public insurance, and reside in lower income zip codes. Comorbidities, including perinatal complications, metabolic disorders, central nervous system diseases, infection, and neonatal abstinence syndrome were more common among SGA-coded term newborns. These newborns also had higher odds of in-hospital death (OR = 3.0 95 % confidence interval: 2.0, 4.4), longer mean length of stay (3.7 vs. 2.3 days, p < 0.001), and higher mean hospital charges ($12,621 vs. $5012, p < 0.001). Conclusions for practice Term newborns coded as SGA have higher morbidity, mortality, and incur higher hospital charges than other term newborns. More research is needed to understand causes of SGA so its incidence and effects can be reduced.
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Enfermedades del Recién Nacido/epidemiología , Recien Nacido Prematuro , Recién Nacido Pequeño para la Edad Gestacional , Nacimiento a Término , Peso al Nacer , Femenino , Humanos , Incidencia , Lactante , Mortalidad Infantil , Recién Nacido , Masculino , Oportunidad Relativa , Embarazo , Estados Unidos/epidemiologíaRESUMEN
BACKGROUND: With the development and widespread use of combination antiretroviral therapy, HIV-infected women live longer, healthier lives. Previous research has shown that, since the adoption of combination antiretroviral therapy in the United States, rates of morbidity and adverse obstetric outcomes remained higher for HIV-infected pregnant women compared with HIV-uninfected pregnant women. Monitoring trends in the outcomes these women experience is essential, as recommendations for this special population continue to evolve with the progress of HIV treatment and prevention options. OBJECTIVE: We conducted an analysis comparing rates of hospitalizations and associated outcomes among HIV-infected and HIV-uninfected pregnant women in the United States from 2004 through 2011. STUDY DESIGN: We used cross-sectional hospital discharge data for girls and women age 15-49 from the 2004, 2007, and 2011 Nationwide Inpatient Sample, a nationally representative sample of US hospital discharges. Demographic characteristics, morbidity outcomes, and time trends were compared using χ(2) tests and multivariate logistic regression. Analyses were weighted to produce national estimates. RESULTS: In 2011, there were 4751 estimated pregnancy hospitalizations and 3855 delivery hospitalizations for HIV-infected pregnant women; neither increased since 2004. Compared with those of HIV-uninfected women, pregnancy hospitalizations of HIV-infected women were more likely to be longer, be in the South and Northeast, be covered by public insurance, and incur higher charges (all P < .005). Hospitalizations among pregnant women with HIV infection had higher rates for many adverse outcomes. Compared to 2004, hospitalizations of HIV-infected pregnant women in 2011 had higher odds of gestational diabetes (adjusted odds ratio, 1.81; 95% confidence interval, 1.16-2.84), preeclampsia/hypertensive disorders of pregnancy (adjusted odds ratio, 1.58; 95% confidence interval, 1.12-2.24), viral/mycotic/parasitic infections (adjusted odds ratio, 1.90; 95% confidence interval, 1.69-2.14), and bacterial infections (adjusted odds ratio, 2.54; 95% confidence interval, 1.53-4.20). Bacterial infections did not increase among hospitalizations of HIV-uninfected pregnant women. CONCLUSION: The numbers of hospitalizations during pregnancy and delivery have not increased for HIV-infected women since 2004, a departure from previously estimated trends. Pregnancy hospitalizations of HIV-infected women remain more medically complex than those of HIV-uninfected women. An increasing trend in infections among the delivery hospitalizations of HIV-infected pregnant women warrant further attention.
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Infecciones por VIH/complicaciones , Hospitalización/tendencias , Complicaciones Infecciosas del Embarazo/terapia , Adolescente , Adulto , Antirretrovirales/uso terapéutico , Infecciones Bacterianas/complicaciones , Infecciones Bacterianas/epidemiología , Estudios Transversales , Diabetes Gestacional/epidemiología , Femenino , Infecciones por VIH/terapia , Hospitalización/estadística & datos numéricos , Humanos , Hipertensión Inducida en el Embarazo/epidemiología , Persona de Mediana Edad , Oportunidad Relativa , Preeclampsia/epidemiología , Embarazo , Complicaciones del Embarazo/epidemiología , Complicaciones Infecciosas del Embarazo/epidemiología , Resultado del Embarazo , Estados Unidos/epidemiología , Adulto JovenRESUMEN
OBJECTIVE: The primary aim of this serial cross-sectional analysis is to estimate the total number of prevented perinatal HIV transmissions from the time of the initial recommendation for perinatal zidovudine (ZDV) prophylaxis in 1994 through 2020 in the US. METHODS: The estimated number of prevented transmissions was calculated as annual differences between expected and observed numbers of perinatal HIV transmissions. Annual expected number of transmissions was estimated by multiplying the annual number of births to women with HIV by 0.2255 (22.55%), i.e., the transmission rate of the control group in the ACTG Protocol 076 trial. We used published point estimates or, if only ranges were given, the midpoints of those ranges as the best estimates of the annual numbers of births to women with HIV and infants with perinatal HIV. When data were not available, we linearly interpolated or extrapolated the available data to obtain estimated numbers for each year. RESULTS: Between 1978 and 2020, the approximate number of live births to women with HIV was 191 267 (95% confidence interval [CI] 190 392-192 110) and for infants with diagnosed perinatal HIV, it was 21 379 (95% CI 21 088-21 695). Since 1994, the annual number of infants born with HIV decreased from 1263 (95% CI 1194-1333) to 33 in 2019 (95% CI 22-45) and 36 in 2020 (95% CI 25-48), corresponding to a 97% reduction. Cumulatively, an estimated total of 22 732 (95% CI 21 340-24 462) perinatal HIV infections were prevented from 1994 through to 2020. CONCLUSION: The elimination of perinatal HIV transmission-accompanied by the cumulative number of prevented cases exceeding that of perinatal HIV infections-is a major public health achievement in the US.
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Fármacos Anti-VIH , Infecciones por VIH , Transmisión Vertical de Enfermedad Infecciosa , Complicaciones Infecciosas del Embarazo , Zidovudina , Humanos , Infecciones por VIH/prevención & control , Infecciones por VIH/transmisión , Infecciones por VIH/epidemiología , Infecciones por VIH/tratamiento farmacológico , Femenino , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Estados Unidos/epidemiología , Embarazo , Estudios Transversales , Recién Nacido , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Complicaciones Infecciosas del Embarazo/prevención & control , Complicaciones Infecciosas del Embarazo/epidemiología , Zidovudina/uso terapéutico , Fármacos Anti-VIH/uso terapéuticoRESUMEN
This article aimed at analyzing the acute impact and the longer-term recovery of COVID-19 pandemic effects on clinical encounter types, HIV viral load (VL) testing, and suppression (HIV VL < 200 copies/mL). This study was a longitudinal cohort study of participants seen during 2019-2022 at nine HIV Outpatient Study (HOPS) sites. Generalized linear mixed models (GLMMs) estimated monthly rates of all encounters, office and telemedicine visits, and HIV VL tests using 2010-2022 data. We examined factors associated with nonsuppressed VL (VL ≥ 200 copies/mL) and not having ambulatory care visits during the pandemic using GLMM for logistic regression with 2017-2022 and 2019-2022 data, respectively. Of 2351 active participants, 76.0% were male, 57.6% aged ≥ 50 years, 40.7% non-Hispanic White, 38.2% non-Hispanic Black, 17.3% Hispanic/Latino, and 51.0% publicly insured. The monthly rates of in-person and telemedicine visits varied during 2020 through mid-year 2022. Multivariable logistic regression showed that persons with no encounters were more likely to be male or have VL ≥ 200 copies/mL. For participants with ≥1 VL test, the prevalence rate of HIV VL ≥ 200 copies/mL during 2020 was close to the rates from 2014 to 2019. The change in probability of viral suppression was not associated with participant's age, sex, race/ethnicity, or insurance type. In the HOPS, overall patient encounters declined over 2 years during the pandemic with variations in telemedicine and in-person events, with relative maintenance of viral suppression. Ongoing recovery from the impact of COVID-19 on ambulatory care will require continued efforts to improve retention and patient access to medical services.
RESUMEN
PURPOSE: Mobile technology allows delivery of sexual and reproductive health (SRH) information directly to youth. We tested the efficacy of Crush, a mobile application aimed at improving sexual health by promoting the use of SRH services and contraception among female adolescents. METHODS: We recruited 1,210 women aged 14-18 years through social media advertising and randomized them into a Crush intervention group and a control group that received a wellness app. At 3 and 6 months post randomization, we compared changes from baseline in behaviors, attitudes, self-efficacy, perceived social norms, birth control knowledge, perceived control and use intentions, and SRH service utilization. Odds ratios were estimated with multivariable logistic regression and adjusted for baseline outcome, age, race/ethnicity, mother's education, and sexual experience. RESULTS: There was no difference in accessing SRH services according to study group. Three months post baseline, Crush users had higher odds (p < .05) than control participants of reporting confidence in accessing SRH services (adjusted odds ratio [aOR] = 1.6, 95% confidence interval [CI]: 1.1-2.3) and of believing that it is a good thing to use birth control consistently (aOR = 2.3, 95% CI: 1.4-3.8). Six months after baseline, Crush users had higher odds than control participants of reporting they can control whether birth control is used every time they have sex (aOR = 1.8, 95% CI: 1.2-2.6) and perceiving they would get pregnant if they did not use birth control (aOR: 1.5, 95% CI: 1.1-2.2). Impacts on other behavioral constructs were also found. DISCUSSION: Crush was associated with improvements in knowledge, attitudes, and self-efficacy related to key SRH behaviors and may be a strategy to deliver SRH education to adolescent women. Studies including larger numbers of sexually active adolescents are needed to demonstrate behavioral impacts.
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Aplicaciones Móviles , Salud Sexual , Embarazo , Adolescente , Humanos , Femenino , Conducta Sexual , Anticoncepción , Educación Sexual , Salud Reproductiva/educaciónRESUMEN
OBJECTIVE: Describe discrepancies between facilities' self-reported level of neonatal care and Centers for Disease Control and Prevention Levels of Care Assessment ToolSM (CDC LOCATeSM)-assessed level. STUDY DESIGN: CDC LOCATeSM data from 765 health facilities in the United States, including 17 states, one territory, one large multi-state hospital system, and one perinatal region within a state, was collected between 2016 and 2021 for this cross-sectional analysis. RESULT: Among 721 facilities that self-reported level of neonatal care, 33.1% had discrepancies between their self-reported level and their LOCATeSM-assessed level. Among facilities with discrepancies, 75.3% self-reported a higher level of neonatal care than their LOCATeSM-assessed level. The most common elements contributing to discrepancies were limited specialty and subspecialty staffing, such as neonatology or neonatal surgery. CONCLUSION: Results highlight opportunities for jurisdictions to engage with facilities, health systems, and partners about levels of neonatal care, and to collaborate to promote standardized systems of risk-appropriate care.
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Medicina , Neonatología , Embarazo , Recién Nacido , Femenino , Humanos , Estados Unidos , Estudios Transversales , Instituciones de Salud , Centers for Disease Control and Prevention, U.S.RESUMEN
BACKGROUND: Differences in activity limitations between stroke survivors and people with other chronic conditions and how their levels of activity limitation vary by sociodemographic characteristics have not been well quantified. OBJECTIVE: To quantify activity limitations experienced by Chinese older adult stroke survivors and explore stroke effects in specific subgroups. METHODS: We used Chinese Longitudinal Healthy Longevity Survey 2017-2018 data (N = 11,743) to produce population-weighted estimates of activity limitations using the Activities of Daily Living (ADL) and the Instrumental ADL (IADL) scales for older adults (age 65 and older) stroke survivors compared to those with non-stroke chronic conditions and those without chronic conditions. Multinomial logistic regressions were run with outcomes "no activity limitation," "IADL only limitation," and "ADL limitation." RESULTS: The weighted marginal prevalence of ADL limitation was higher in the stroke group (14.8%) than in those with non-stroke chronic condition (4.8%) or no chronic conditions (3.6%) (p < 0.01). The corresponding prevalence of IADL limitation for the three groups was 36.0%, 31.4%, and 22.2%, respectively (p < 0.01). Stroke survivors aged ≥ 80 years had a higher prevalence of ADL/IADL limitation than those aged 65-79 years (p < 0.01). Formal education was associated with a lower prevalence of ADL/IADL limitation in each chronic condition group (p < 0.01). CONCLUSIONS: Prevalence and severity of activity limitation among Chinese older adult stroke survivors were several times higher than those without chronic conditions and those with non-stroke chronic conditions. Stroke survivors, particularly those aged ≥80 years and those without formal education, might be predisposed to more severe activity limitation and require more support to compensate.
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Actividades Cotidianas , Personas con Discapacidad , Accidente Cerebrovascular , Anciano , Humanos , Pueblos del Este de Asia , Estudios Longitudinales , Accidente Cerebrovascular/epidemiologíaRESUMEN
ABSTRACT: In 2012, the Centers for Disease Control and Prevention published a Framework for Elimination of Perinatal Transmission of HIV in the United States in Pediatrics, setting the goals of an incidence of <1 case of perinatal HIV per 100 000 live births, and a perinatal transmission rate of <1%. We used National HIV Surveillance System data to monitor the numbers of perinatally acquired HIV cases among US-born persons and perinatal HIV diagnosis rates per 100 000 live births to approximate incidence. Perinatal HIV transmission rates from 2010 to 2019 were calculated by using estimates of live births to women with an HIV diagnosis from the National Inpatient Sample, Healthcare Cost and Utilization Project. The annual estimated number of live births to women with diagnosed HIV decreased from 4587 in 2010 to 3525 in 2019, and the number of US-born infants with perinatally acquired HIV decreased from 74 in 2010 to 32 in 2019. Annual perinatal HIV diagnosis rates declined from 1.9 to 0.9 per 100 000 live births, and perinatal HIV transmission rates declined from 1.6% to 0.9%. Racial and ethnic disparities in HIV diagnosis rates persisted but declined substantially over the 10-year period. Both diagnosis and transmission rate elimination goals were first achieved in 2019. To maintain the elimination of perinatal HIV, and to eliminate racial disparities, the continued coordinated effort of health care and public health is required. The approach to perinatal HIV elimination is a public health model that can be replicated or expanded to areas beyond HIV.
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Infecciones por VIH , Complicaciones Infecciosas del Embarazo , Embarazo , Lactante , Niño , Humanos , Estados Unidos/epidemiología , Femenino , Complicaciones Infecciosas del Embarazo/epidemiología , Complicaciones Infecciosas del Embarazo/prevención & control , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Incidencia , Centers for Disease Control and Prevention, U.S.RESUMEN
BACKGROUND: Severe maternal morbidity (SMM) is broadly defined as an unexpected and potentially life-threatening event associated with labor and delivery. The Centers for Disease Control and Prevention (CDC) produced 21 different indicators based on International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) hospital diagnostic and procedure codes to identify cases of SMM. OBJECTIVES: To examine existing SMM indicators and determine which indicators identified the most in-hospital mortality at delivery hospitalization. METHODS: Data from the 1993-2015 and 2017-2019 Healthcare Cost and Utilization Project's National Inpatient Sample were used to report SMM indicator-specific prevalences, in-hospital mortality rates, and population attributable fractions (PAF) of mortality. We hierarchically ranked indicators by their overall PAF of in-hospital mortality. Predictive modeling determined if SMM prevalence remained comparable after transition to ICD-10-CM coding. RESULTS: The study population consisted of 18,198,934 hospitalizations representing 87,864,173 US delivery hospitalizations. The 15 top ranked indicators identified 80% of in-hospital mortality; the proportion identified by the remaining indicators was negligible (2%). The top 15 indicators were: restoration of cardiac rhythm; cardiac arrest; mechanical ventilation; tracheostomy; amniotic fluid embolism; aneurysm; acute respiratory distress syndrome; acute myocardial infarction; shock; thromboembolism, pulmonary embolism; cerebrovascular disorders; sepsis; both DIC and blood transfusion; acute renal failure; and hysterectomy. The overall prevalence of the top 15 ranked SMM indicators (~22,000 SMM cases per year) was comparable after transition to ICD-10-CM coding. CONCLUSIONS: We determined the 15 indicators that identified the most in-hospital mortality at delivery hospitalization in the US. Continued testing of SMM indicators can improve measurement and surveillance of the most severe maternal complications at the population level.
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Alta del Paciente , Choque , Femenino , Humanos , Hospitalización , Prevalencia , Hospitales , Morbilidad , Estudios RetrospectivosRESUMEN
OBJECTIVE: Describe sources of discrepancy between self-assessed LoMC (level of maternal care) and CDC LOCATe®-assessed (Levels of Care Assessment Tool) LoMC. STUDY DESIGN: CDC LOCATe® was implemented at 480 facilities in 13 jurisdictions, including states, territories, perinatal regions, and hospital systems, in the U.S. Cross-sectional analyses were conducted to compare facilities' self-reported LoMC and LOCATe®-assessed LoMC. RESULT: Among 418 facilities that self-reported an LoMC, 41.4% self-reported a higher LoMC than their LOCATe®-assessed LoMC. Among facilities with discrepancies, the most common elements lacking to meet self-reported LoMC included availability of maternal-fetal medicine (27.7%), obstetric-specializing anesthesiologist (16.2%), and obstetric ultrasound services (12.1%). CONCLUSION: Two in five facilities self-report a LoMC higher than their LOCATe®-assessed LoMC, indicating discrepancies between perceived maternal care capabilities and those recommended in current LoMC guidelines. Results highlight an opportunity for states to engage with facilities, health systems, and other stakeholders about LoMC and collaborate to strengthen systems for improving maternal care delivery.
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Instituciones de Salud , Accesibilidad a los Servicios de Salud , Centers for Disease Control and Prevention, U.S. , Estudios Transversales , Parto Obstétrico , Femenino , Humanos , Embarazo , Autoinforme , Estados UnidosRESUMEN
HIV-1 vaccine efforts are primarily directed toward eliciting neutralizing antibodies (nAbs). However, vaccine trials and mother-to-child natural history cohort investigations indicate that antibody-dependent cellular cytotoxicity (ADCC), not nAbs, correlate with prevention. The ADCC characteristics associated with lack of HIV-1 acquisition remain unclear. Here, we examine ADCC and nAb properties in pretransmission plasma from HIV-1-exposed infants and from the corresponding transmitting and nontransmitting mothers' breast milk and plasma. Breadth and potency (BP) were assessed against a panel of heterologous, nonmaternal variants. ADCC and neutralization sensitivity were estimated for the strains in the infected mothers. Infants who eventually acquired HIV-1 and those who remained uninfected had similar pretransmission ADCCBP. Viruses circulating in the transmitting and nontransmitting mothers had similar ADCC susceptibility. Infants with higher pretransmission ADCCBP and exposure to more ADCC-susceptible strains were less likely to acquire HIV-1. In contrast, higher preexisting infant neutralization BP and greater maternal virus neutralization sensitivity did not associate with transmission. Infants had higher ADCCBP closer to birth and in the presence of high plasma IgG relative to IgA levels. Mothers with potent humoral responses against their autologous viruses harbored more ADCC-sensitive strains. ADCC sensitivity of the exposure variants and preexisting ADCCBP influenced mother-to-child HIV-1 transmission during breastfeeding. Vaccination strategies that enhance ADCC are likely insufficient to prevent HIV-1 transmission because some strains may have low ADCC susceptibility.
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Infecciones por VIH , VIH-1 , Anticuerpos Neutralizantes , Citotoxicidad Celular Dependiente de Anticuerpos , Femenino , Anticuerpos Anti-VIH , Infecciones por VIH/complicaciones , Humanos , Lactante , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Leche HumanaRESUMEN
Colombia announced the first case of severe acute respiratory syndrome coronavirus 2 on March 6, 2020. Since then, the country has reported a total of 5,002,387 cases and 127,258 deaths as of October 31, 2021. The aggressive transmission dynamics of SARS-CoV-2 motivate an investigation of COVID-19 at the national and regional levels in Colombia. We utilize the case incidence and mortality data to estimate the transmission potential and generate short-term forecasts of the COVID-19 pandemic to inform the public health policies using previously validated mathematical models. The analysis is augmented by the examination of geographic heterogeneity of COVID-19 at the departmental level along with the investigation of mobility and social media trends. Overall, the national and regional reproduction numbers show sustained disease transmission during the early phase of the pandemic, exhibiting sub-exponential growth dynamics. Whereas the most recent estimates of reproduction number indicate disease containment, with Rt<1.0 as of October 31, 2021. On the forecasting front, the sub-epidemic model performs best at capturing the 30-day ahead COVID-19 trajectory compared to the Richards and generalized logistic growth model. Nevertheless, the spatial variability in the incidence rate patterns across different departments can be grouped into four distinct clusters. As the case incidence surged in July 2020, an increase in mobility patterns was also observed. On the contrary, a spike in the number of tweets indicating the stay-at-home orders was observed in November 2020 when the case incidence had already plateaued, indicating the pandemic fatigue in the country.
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COVID-19 , Pandemias , COVID-19/epidemiología , Colombia/epidemiología , Predicción , Humanos , SARS-CoV-2RESUMEN
In this study, hospital discharge data from the 2016-2017 Healthcare Cost and Utilization Project were analyzed to describe national and, where data were available, state-specific prevalences of chronic hypertension and pregnancy-associated hypertension at delivery hospitalization. In 2016-2017, the prevalence of chronic hypertension was 216 per 10,000 delivery hospitalizations nationwide, ranging from 125 to 400 per 10,000 delivery hospitalizations in individual states. The prevalence of pregnancy-associated hypertension was 1021 per 10,000 delivery hospitalizations nationwide, ranging from 693 to 1382 per 10,000 delivery hospitalizations in individual states. The burden of hypertensive disorders in pregnancy remains high and varies considerably by jurisdiction.
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Parto Obstétrico/estadística & datos numéricos , Hipertensión Inducida en el Embarazo/epidemiología , Adulto , Bases de Datos Factuales , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Hipertensión/epidemiología , Embarazo , Prevalencia , Estudios Retrospectivos , Estados Unidos/epidemiologíaRESUMEN
In humans, pre-existing anti-HIV-1 neutralizing antibodies (nAbs) have not been associated with decreased HIV-1 acquisition. Here, we evaluate antibody-dependent cellular cytotoxicity (ADCC) present in pre-transmission infant and maternal plasma and breast milk (BM) against the contemporaneous maternal HIV-1 variants. HIV-1-exposed uninfected compared with HIV-1-exposed infected infants have higher ADCC and a combination of ADCC and nAb responses against their corresponding mother's strains. ADCC does not correlate with nAbs, suggesting they are independent activities. The infected infants with high ADCC compared with low ADCC, but not those with higher ADCC plus nAbs, have lower morbidity up to 1 year after birth. A higher IgA to IgG ratio, observed in BM supernatants and in a higher proportion of the infected compared with the uninfected infants, associates with lower ADCC. Against the exposure strains, ADCC, more than nAbs, associates with both lower mother-to-child transmission and decreased post-infection infant morbidity.
Asunto(s)
Anticuerpos Neutralizantes/sangre , Citotoxicidad Celular Dependiente de Anticuerpos , Anticuerpos Anti-VIH/sangre , Infecciones por VIH/inmunología , VIH-1/inmunología , Adulto , Citotoxicidad Inmunológica , Femenino , Infecciones por VIH/genética , Infecciones por VIH/patología , Infecciones por VIH/virología , VIH-1/genética , VIH-1/patogenicidad , Humanos , Sueros Inmunes/química , Inmunoglobulina A/sangre , Inmunoglobulina G/sangre , Lactante , Transmisión Vertical de Enfermedad Infecciosa , Leche Humana/química , Leche Humana/inmunología , EmbarazoRESUMEN
BACKGROUND: The objective of this study was to estimate the prevalence of current (past 30 days) marijuana use and its associations with demographic, other substance use, chronic disease, physical health and mental health measures among women of reproductive age (18-44 years) in 12 US states. METHODS: This analysis used 2016 Behavioral Risk Factor Surveillance System (BRFSS) data from 16,556 women of reproductive age in 12 US states. Women self-reported current marijuana use and covariates. Weighted χ2 statistics and adjusted prevalence ratios (aPR) were calculated accounting for the complex survey design. RESULTS: Among women of reproductive age, 9.9 % reported current marijuana use. Current cigarette use (aPR: 2.0, 95 % CI: 1.6, 2.6), current e-cigarette use (aPR: 1.9, 95 % CI: 1.4, 2.6), binge drinking (aPR: 2.6, 95 % CI: 1.9, 3.6), ever having received a depression diagnosis (aPR: 1.6, 95 % CI: 1.2, 2.1), and ≥14 days of poor mental health in the past 30 days (aPR: 1.8, 95 % CI: 1.3, 2.4) were all associated with higher adjusted prevalence of current marijuana use. Reporting ≥14 days of poor physical health within the last 30 was associated with a 40 % lower adjusted prevalence of current marijuana use (aPR: 0.6, 95 % CI: 0.4, 0.8). CONCLUSION: Current marijuana use among women of reproductive age was associated with other substance use, poor mental health, and depression. As state laws concerning marijuana use continue to change, it is important to monitor usage patterns and to assess associated health risks in this population.
Asunto(s)
Uso de la Marihuana/epidemiología , Adolescente , Adulto , Sistema de Vigilancia de Factor de Riesgo Conductual , Enfermedad Crónica , Sistemas Electrónicos de Liberación de Nicotina , Femenino , Humanos , Abuso de Marihuana , Fumar Marihuana , Salud Mental , Persona de Mediana Edad , Prevalencia , Reproducción , Trastornos Relacionados con Sustancias , Estados Unidos , Adulto JovenRESUMEN
BACKGROUND: To investigate potential risk factors for perinatal (intrauterine and intrapartum) mother-to-child transmission (MTCT) of HIV in women unexposed to antiretroviral therapy (ART) during pregnancy. METHODS: We compared factors according to perinatal MTCT outcome among 2275 ART-naive (until the onset of labor) HIV-infected women in the Breastfeeding, Antiretrovirals and Nutrition study (2004-2010) in Lilongwe, Malawi. Factors included HIV viral load during pregnancy, food security, demographic characteristics, hematologic and blood chemistry measures, medical history and physical factors. Associations with perinatal MTCT and interactions with maternal viral load were assessed using simple and multivariable logistic regression. RESULTS: There were 119 (115 intrauterine and 4 intrapartum) cases of perinatal MTCT, only one to a mother with <1000 HIV copies/mL. Maternal viral loads >10,000 copies/mL were common (63.1%). Lower maternal viral load (<1000 copies/mL and 1000.1-10,000 copies/mL) was associated with reduced odds of perinatal MTCT [adjusted odds ratio (aOR), 0.1; 95% confidence interval (CI): 0.01-0.4 and aOR, 0.2; 95% CI: 0.1-0.4, respectively), compared with maternal viral load >10,000 copies/mL. Low CD4+ T cell count (≤350 cells/µL) was only associated with perinatal MTCT in unadjusted models. Food shortage (aOR, 1.8; 95% CI: 1.2-2.6), sexually transmitted infection (STI) (past year; aOR, 1.9; 95% CI: 1.0-3.7), histories of herpes zoster (aOR, 3.0; 95% CI: 1.6-5.6) and tuberculosis (aOR, 2.5; 95% CI: 1.1-5.7) were associated with increased odds of perinatal MTCT. CONCLUSIONS: These findings confirm that lowering maternal HIV viral load is most important in preventing perinatal MTCT and support efforts to address food shortage, STI and tuberculosis prevention, while informing programs to improve ART coverage in pregnancy.