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1.
Am J Obstet Gynecol ; 229(3): 304.e1-304.e9, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37330126

RESUMEN

BACKGROUND: Emerging data suggest that patient satisfaction data are subject to inherent biases that negatively affect women physicians. OBJECTIVE: This study aimed to describe the association between the Press Ganey patient satisfaction survey and physician gender in a multi-institutional study of outpatient gynecologic care. STUDY DESIGN: This was a multisite, observational, population-based survey study using the results of Press Ganey patient satisfaction surveys from 5 unrelated community-based and academic medical institutions with outpatient gynecology visits between January 2020 and April 2022. The primary outcome variable was the likelihood to recommend a physician, and individual survey responses served as the unit of analysis. Patient demographic data were collected through the survey, including self-reported age, gender, and race and ethnicity (categorized as White, Asian, or Underrepresented in Medicine, which groups together Black, Hispanic or LatinX, American Indian or Alaskan Native, and Hawaiian or Pacific Islander). Bivariate comparisons between demographics (physician gender, patient and physician age quartile, patient and physician race) and likelihood to recommend were assessed using generalized estimating equation models clustered by physician. Odds ratios, 95% confidence intervals, and P values for these analyses are reported, and results were considered statistically significant at P<.05. Analysis was performed using SAS, version 9.4 (SAS Institute Inc., Cary, NC). RESULTS: Data were obtained from 15,184 surveys for 130 physicians. Most physicians were women (n=95 [73%]) and White (n=98 [75%]), and patients were also predominantly White (n=10,495 [69%]). A little over half of all visits were race-concordant, meaning that both patient and physician reported the same race (57%). Women physicians were less likely to receive a topbox survey score (74% vs 77%) and in the multivariate model had 19% lower odds of receiving a topbox score (95% confidence interval, 0.69-0.95). Patient age had a statistically significant relationship with score, with patients aged ≥63 years having >3-fold increase in odds of providing a topbox score (odds ratio, 3.10; 95% confidence interval, 2.12-4.52) compared with the youngest patients. After adjustment, patient and physician race and ethnicity showed similar effects on the odds of a topbox likelihood-to-recommend score, with Asian physicians and Asian patients having lower odds of a topbox likelihood-to-recommend score when compared with White physicians and patients (odds ratio: 0.89 [95% confidence interval, 0.81-0.98] and 0.62 [95% confidence interval, 0.48-0.79], respectively). Underrepresented in medicine physicians and patients showed significantly increased odds of a topbox likelihood-to-recommend score (odds ratio: 1.27 [95% confidence interval, 1.21-1.33] and 1.03 [95% confidence interval, 1.01-1.06], respectively). The physician age quartile was not significantly associated with odds of a topbox likelihood-to-recommend score. CONCLUSION: Women gynecologists were 18% less likely to receive top patient satisfaction scores compared with men in this multisite, population-based survey study using the results of Press Ganey patient satisfaction surveys. The results of these questionnaires should be adjusted for bias given that they provide data currently being used to understand patient-centered care.


Asunto(s)
Ginecología , Médicos Mujeres , Masculino , Humanos , Femenino , Satisfacción del Paciente , Pacientes Ambulatorios , Encuestas y Cuestionarios
2.
Clin Infect Dis ; 75(7): 1123-1130, 2022 09 30.
Artículo en Inglés | MEDLINE | ID: mdl-35139187

RESUMEN

BACKGROUND: Live attenuated vaccines such as oral polio vaccine (OPV) can stimulate innate immunity and may have off-target protective effects on other pathogens. We aimed to address this hypothesis by examining changes in infectious diseases (ID)-related hospitalizations in all hospital discharges in California during OPV (1985-1996) and non-OPV immunization periods (2000-2010). METHODS: We searched the Office of Statewide Health Planning and Development database for all hospital discharges with any ID-related discharge diagnosis code during 1985-2010. We compared the proportion of ID-related hospitalizations (with at least 1 ID-related discharge diagnosis) among total hospitalizations during OPV immunization (1985-1996) versus non-OPV immunization (2000-2010) periods. RESULTS: There were 19 281 039 ID-related hospitalizations (8 464 037 with an ID-related discharge diagnosis as the principal discharge diagnosis for the hospitalization) among 98 117 475 hospitalizations in 1985-2010; 9 520 810 ID hospitalizations/43 456 484 total hospitalizations in 2000-2010 versus 7 526 957/43 472 796 in 1985-1996. The risk ratio for ID-related hospitalizations in 2000-2010 versus 1985-1996 was 1.27 (95% confidence interval [CI], 1.26-1.27) for all diagnoses and 1.15 (95% CI: 1.15-1.16) for principal diagnoses. Increases also existed in the proportion of lower respiratory and gastrointestinal infections. DISCUSSION: The proportion of ID-related hospitalizations was lower in the OPV immunization period compared to the period after OPV was discontinued. When focused only on hospitalizations with ID as the principal discharge diagnosis, the signal remained significant but was smaller. These findings require replication in additional studies.


Asunto(s)
Enfermedades Transmisibles , Poliomielitis , Hospitalización , Hospitales , Humanos , Lactante , Alta del Paciente , Poliomielitis/epidemiología , Poliomielitis/prevención & control , Vacuna Antipolio de Virus Inactivados , Vacuna Antipolio Oral , Vacunación , Vacunas Atenuadas
3.
Clin Infect Dis ; 75(1): e314-e321, 2022 08 24.
Artículo en Inglés | MEDLINE | ID: mdl-35079772

RESUMEN

BACKGROUND: An immunodiagnostic assay that sensitively detects a cell-mediated immune response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is needed for epidemiological investigation and for clinical assessment of T- cell-mediated immune response to vaccines, particularly in the context of emerging variants that might escape antibody responses. METHODS: The performance of a whole blood interferon-gamma (IFN-γ) release assay (IGRA) for the detection of SARS-CoV-2 antigen-specific T cells was evaluated in coronavirus disease 2019 (COVID-19) convalescents tested serially up to 10 months post-infection and in healthy blood donors. SARS-CoV-2 IGRA was applied in contacts of households with index cases. Freshly collected blood in the lithium heparin tube was left unstimulated, stimulated with a SARS-CoV-2 peptide pool, and stimulated with mitogen. RESULTS: The overall sensitivity and specificity of IGRA were 84.5% (153/181; 95% confidence interval [CI]: 79.0-89.0) and 86.6% (123/142; 95% CI: 80.0-91.2), respectively. The sensitivity declined from 100% (16/16; 95% CI: 80.6-100) at 0.5-month post-infection to 79.5% (31/39; 95% CI: 64.4-89.2) at 10 months post-infection (P < .01). The IFN-γ response remained relatively robust at 10 months post-infection (3.8 vs 1.3 IU/mL, respectively). In 14 households, IGRA showed a positivity rate of 100% (12/12) and 65.2% (15/23), and IgG of 50.0% (6/12) and 43.5% (10/23) in index cases and contacts, respectively, exhibiting a difference of + 50% (95% CI: +25.4 to +74.6) and +21.7% (95% CI: +9.23 to +42.3), respectively. Either IGRA or IgG was positive in 100% (12/12) of index cases and 73.9% (17/23) of contacts. CONCLUSIONS: The SARS-CoV-2 IGRA is a useful clinical diagnostic tool for assessing cell-mediated immune response to SARS-CoV-2.


Asunto(s)
COVID-19 , SARS-CoV-2 , Anticuerpos Antivirales , COVID-19/diagnóstico , Humanos , Inmunoglobulina G , Ensayos de Liberación de Interferón gamma , Sensibilidad y Especificidad
4.
BMC Health Serv Res ; 20(1): 678, 2020 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-32698825

RESUMEN

BACKGROUND: Patient satisfaction is increasingly being used to assess, and financially reward, provider performance. Previous studies suggest that race/ethnicity (R/E) may impact satisfaction, yet few practices adjust for patient R/E. The objective of this study is to examine R/E differences in patient satisfaction ratings and how these differences impact provider rankings. METHODS: Patient satisfaction survey data linked to electronic health records from two large outpatient centers in northern California - a non-profit organization of community-based clinics (Site A) and an academic medical center (Site B) - was collected and analyzed. Participants consisted of adult patients who received outpatient care at Site A from December 2010 to November 2014 and Site B from March 2013 to August 2014, and completed Press-Ganey Medical Practice Survey questionnaires (N = 216,392 (Site A) and 30,690 (Site B)). Self-reported non-Hispanic white (NHW), Black, Latino, and Asian patients were studied. For six questions each representing a survey subdomain, favorable ratings were defined as top-box ("very good") compared to all other categories ("very poor," "poor," "fair," and "good"). Using multivariable logistic regression with provider random effects, we assessed whether the likelihood of giving favorable ratings differed by patient R/E, adjusting for patient age and sex. RESULTS: Asian, younger and female patients provided less favorable ratings than other R/E, older and male patients. After adjustment, Asian patients were less likely than NHW patients to provide top-box ratings to the overall assessment question "likelihood of recommending this practice to others" (Site A: Asian predicted probability (PP) 0.680, 95% confidence interval (CI): 0.675-0.685 compared to NHW PP 0.820, 95% CI: 0.818-0.822; Site B: Asian PP 0.734, 95% CI: 0.733-0.736 compared to NHW PP 0.859, 95% CI: 0.859-0.859). The effect sizes for Asian R/E were greater than the effect sizes for older age and female sex. An absolute 3% decrease in mean composite score between providers serving different percentages of Asian patients translated to an absolute 40% drop in national ranking. CONCLUSIONS: Patient satisfaction scores may need to be adjusted for patient R/E, particularly for providers caring for high panel percentages of Asian patients.


Asunto(s)
Pueblo Asiatico/psicología , Satisfacción del Paciente/etnología , Centros Médicos Académicos , Adolescente , Adulto , Anciano , Atención Ambulatoria , Pueblo Asiatico/estadística & datos numéricos , California , Centros Comunitarios de Salud , Etnicidad/psicología , Etnicidad/estadística & datos numéricos , Femenino , Encuestas de Atención de la Salud , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente/estadística & datos numéricos , Grupos Raciales/psicología , Grupos Raciales/estadística & datos numéricos , Adulto Joven
5.
J Vasc Interv Radiol ; 30(11): 1870-1875, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31587951

RESUMEN

PURPOSE: To examine the impact of targeted efforts to increase the number of female speakers at the Society of Interventional Radiology (SIR) Annual Scientific Meeting (ASM) by reporting gender trends for invited faculty in 2017/2018 vs 2016. MATERIALS AND METHODS: Faculty rosters for the 2016, 2017, and 2018 SIR ASMs were stratified by gender to quantify female representation at plenary sessions, categorical courses, symposia, self-assessment modules, and "meet-the-expert" sessions. Keynote events, scientific abstract presentations, and award ceremonies were excluded. In 2017, the SIR Annual Meeting Committee issued requirements for coordinators to invite selected women as speakers. Session coordinators are responsible for issuing speaker invitations, and invited speakers have the option to decline. RESULTS: Years 2017 and 2018 showed increases in female speaker representation, with women delivering 13% (89 of 687) and 14% (85 of 605) of all assigned presentations, compared with 9% in 2016 (46 of 514; P = .03 and P = .01, respectively). Gender diversity correlated with the gender of the session coordinator(s). When averaged over a 3-year period, female speakers constituted 7% of the speaker roster (112 of 1,504 presentations) for sessions led by an all-male coordinator team, compared with 36% (108 of 302) for sessions led by at least 1 female coordinator (P < .0001). Results of the linear regression model confirmed the effect of coordinator team gender composition (P < .0001). CONCLUSIONS: Having a woman as a session coordinator increased female speaker participation, which suggests that the inclusion of more women as coordinators is one mechanism for achieving gender balance at scientific meetings.


Asunto(s)
Congresos como Asunto/tendencias , Médicos Mujeres/tendencias , Radiólogos/tendencias , Sexismo/tendencias , Sociedades Médicas/tendencias , Habla , Mujeres Trabajadoras , Femenino , Humanos , Masculino , Factores de Tiempo
6.
J Vasc Interv Radiol ; 30(4): 579-583, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30772166

RESUMEN

PURPOSE: To investigate the current state of gender diversity among invited coordinators at the Society of Interventional Radiology (SIR) Annual Scientific Meeting and to compare the academic productivity of female interventional radiologists to that of invited male coordinators. MATERIALS AND METHODS: Faculty rosters for the SIR Annual Scientific Meetings from 2015 to 2017 were stratified by gender to quantify female representation among those asked to lead and coordinate podium sessions. To quantify academic productivity and merit, H-index, publications, and authorship by females over a 6-year period (2012-2017) were statistically compared to that of recurring male faculty. RESULTS: From 2015 to 2017, women held 7.1% (9/126), 4.3%, (8/188), and 13.7% (27/197) of the available coordinator positions for podium sessions, with no representation at the plenary sessions, and subject matter expertise was concentrated in economics and education. Academic productivity of the top quartile of published female interventional radiologists was statistically similar to that of the invited male faculty (H-index P = .722; total publications P = .689; and authorship P = .662). CONCLUSIONS: This study found that senior men dominate the SIR Annual Scientific Meeting, with few women leading or coordinating the podium sessions, despite their established academic track record.


Asunto(s)
Selección de Profesión , Médicos Mujeres/tendencias , Radiólogos/tendencias , Radiología Intervencionista/educación , Sexismo/tendencias , Especialización/tendencias , Mujeres Trabajadoras , Congresos como Asunto/tendencias , Educación de Postgrado en Medicina/tendencias , Femenino , Humanos , Masculino , Radiólogos/educación , Radiología Intervencionista/tendencias , Sociedades Médicas/tendencias , Mujeres Trabajadoras/educación
7.
Clin Infect Dis ; 67(suppl_1): S78-S84, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376083

RESUMEN

Background: Mutations associated with prolonged replication of the attenuated polioviruses found in oral poliovirus vaccine (OPV) can lead to vaccine-derived poliovirus (VDPV) and cause paralysis indistinguishable from that caused by wild poliovirus. In response, the World Health Organization has initiated the transition to exclusive use of inactivated poliovirus vaccine (IPV), with OPV administration in cases of outbreak. However, it is currently unclear how IPV-only vaccination, well known to provide humoral but not mucosal immunity, will impact the development of paralysis causing OPV variants. Children infected with human immunodeficiency virus (HIV) have been documented to show decreased mucosal immunity following OPV vaccination. Thus, HIV-infected children vaccinated with OPV may serve as proxy for children with IPV-only vaccination. Methods: We conducted a prospective study of Zimbabwean infants receiving OPV as part of their routine vaccination schedule. Stool samples collected from OPV-vaccinated children serially until age 24 months were tested for OPV serotypes using a real-time polymerase chain reaction protocol that quantifies the amount of mutant OPV variants found in each sample. Results: Out of 2130 stool samples collected from 402 infants 365 stool samples were OPV positive: 313 from 212 HIV-noninfected (HIV-) infants and 52 from 34 HIV-infected (HIV+) infants. HIV- infants showed significantly higher proportions of OPV mutants when compared to HIV+ infants. Conclusions: HIV infection is associated with a reduced proportion of OPV vaccine associated paralytic polio mutants. These results suggest that OPV administered to individuals previously vaccinated only with IPV will show decreased propensity for OPV mutations.


Asunto(s)
Infecciones por VIH/complicaciones , Poliomielitis/prevención & control , Vacuna Antipolio de Virus Inactivados/administración & dosificación , Vacuna Antipolio Oral/administración & dosificación , Poliovirus/genética , Vacunación , Heces/virología , Humanos , Esquemas de Inmunización , Lactante , Mutación Puntual , Poliomielitis/inmunología , Poliomielitis/virología , Poliovirus/inmunología , Estudios Prospectivos , Serogrupo , Esparcimiento de Virus , Organización Mundial de la Salud , Zimbabwe
8.
Clin Infect Dis ; 67(suppl_1): S26-S34, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376087

RESUMEN

Background: The Polio Eradication and Endgame Strategic Plan 2013-2018 calls for the gradual withdrawal of oral poliovirus vaccine (OPV) from routine immunization. We aimed to quantify the transmission potential of Sabin strains from OPV when it is reintroduced, accidentally or deliberately, in a community vaccinated with inactivated poliovirus vaccine alone. Methods: We built an individual-based stochastic epidemiological model that allows independent spread of 3 Sabin serotypes and differential transmission rates within versus between households. Model parameters were estimated by fitting to data from a prospective cohort in Mexico. We calculated the effective reproductive number for the Mexico cohort and simulated scenarios of Sabin strain resurgence under postcessation conditions, projecting the risk of prolonged circulation, which could lead to circulating vaccine-derived poliovirus (cVDPV). Results: The estimated effective reproductive number for naturally infected individuals was about 1 for Sabin 2 and Sabin 3 (OPV2 and OPV3) in a postcessation setting. Most transmission events occurred between households. We estimated the probability of circulation for >9 months to be (1) <<1% for all 3 serotypes when 90% of children <5 years of age were vaccinated in a hypothetical outbreak control campaign; (2) 45% and 24% for Sabin 2 and Sabin 3, respectively, when vaccine coverage dropped to 10%; (3) 37% and 8% for Sabin 2 and Sabin 3, respectively, when a single active shedder appeared in a community. Conclusions: Critical factors determining the risk of cVDPV emergence are the scale at which OPV is reintroduced and the between-household transmission rate for poliovirus, with intermediate values posing the greatest risk.


Asunto(s)
Brotes de Enfermedades/prevención & control , Modelos Teóricos , Poliomielitis/prevención & control , Poliovirus/inmunología , Vacunación , Estudios de Cohortes , Erradicación de la Enfermedad , Humanos , México/epidemiología , Poliomielitis/transmisión , Poliomielitis/virología , Poliovirus/fisiología , Vacuna Antipolio de Virus Inactivados , Vacuna Antipolio Oral/administración & dosificación , Estudios Prospectivos , Riesgo , Serogrupo
9.
Clin Infect Dis ; 67(suppl_1): S18-S25, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376089

RESUMEN

Background: Understanding the spatial dynamics of oral polio vaccine (OPV) transmission will improve resource targeting. Mexico provides a natural laboratory, as it uses inactivated polio vaccine routinely as well as OPV bi-annually. Methods: Using geospatial maps, we measured the distance and density of OPV vaccinees' shedding in the areas nearest to unvaccinated households in 3 Mexican villages. Comparison of transmission to unvaccinated households utilized a mixed effects logistic regression with random effects for household and time, adjusted for age, gender, area, and running water. Results: The median distance from an unvaccinated household to its nearest OPV-shedding household was 85 meters (interquartile range, 46-145) and the median number of vaccinees shedding OPV within 200 m was 3 (2-6). Transmission to unvaccinated households occurred by day 1. There was no association (odds ratio [OR] 1.04; 95% credible interval [CrI] 0.92-1.16) between the distance from OPV shedding and the odds of transmission. The number of OPV vaccinees shedding within 200 m came close to a significant association with unvaccinated transmission (OR 0.93; CrI 0.84-1.01), but this was not the case for households 100 or 500 m apart. Results were consistent across the 3 villages. Conclusions: Geospatial analysis did not predict community transmission from vaccinated to unvaccinated households, because OPV use resulted in rapid, low transmission levels. This finding supports the global cessation of OPV.


Asunto(s)
Erradicación de la Enfermedad , Poliomielitis/prevención & control , Vacuna Antipolio de Virus Inactivados/administración & dosificación , Vacuna Antipolio Oral/administración & dosificación , Poliovirus/inmunología , Adolescente , Adulto , Niño , Preescolar , Análisis por Conglomerados , Composición Familiar , Heces/virología , Femenino , Humanos , Masculino , México , Poliomielitis/transmisión , Poliomielitis/virología , Poliovirus/fisiología , Estudios Prospectivos , Análisis Espacial , Cobertura de Vacunación , Esparcimiento de Virus , Adulto Joven
10.
Clin Infect Dis ; 67(suppl_1): S85-S89, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376085

RESUMEN

Background: As wild poliovirus is eradicated and countries switch from oral poliovirus vaccine (OPV) to inactivated poliovirus vaccine (IPV) per World Health Organization recommendations, preventing circulation of vaccine-derived poliovirus (cVDPV) is a top priority. Currently, the impact of prior poliovirus vaccination on OPV shedding is not fully understood. Methods: Stool samples from 2 populations were tested for OPV to assess shedding patterns. 505 samples from 43 US children vaccinated with OPV were collected over 42 days post-vaccination. 1,379 samples from 148 Mexican children vaccinated with OPV were collected over 71 days post-vaccination. Prior vaccination history was recorded for both groups. Results: Seventeen (40%) of the US children had never received poliovirus vaccination while the Mexican children had received at least 2 doses of IPV and 116 (78%) had OPV exposure. In total, 84% of US children and 78% of Mexican children shed OPV (P = .44, Fisher exact test), with a mean shedding duration of 17.4 days for US children and 9.3 days for Mexican children (P < .0001, Wilcoxon-Mann Whitney test). Conclusions: Prior vaccination did not affect the likelihood of shedding, as the US and Mexico cohorts had similar shedding proportions. However, prior vaccination affected shedding duration as the Mexican children, who were largely OPV exposed and all of whom had at least 2 IPV vaccinations, shed OPV for half as long as the US cohort. Since different countries maintain different poliovirus vaccination schedules, it is likely that duration of shedding of OPV varies in populations around the world.


Asunto(s)
Poliomielitis/prevención & control , Vacuna Antipolio de Virus Inactivados/administración & dosificación , Vacuna Antipolio Oral/administración & dosificación , Poliovirus/inmunología , Vacunación , Heces/virología , Humanos , Lactante , México , Poliomielitis/inmunología , Poliomielitis/virología , Estados Unidos , Esparcimiento de Virus
11.
Clin Infect Dis ; 67(suppl_1): S121-S126, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376092

RESUMEN

Background: Global polio eradication efforts rely in part on molecular methods of detecting polioviruses, both wild and vaccine strains, from human and environmental samples. Previous assays used for detection of Sabin oral polio vaccine (OPV) in fecal samples have been labor and time intensive and vary in their sensitivity and specificity. Methods: We developed a high-throughput, multiplex reverse-transcription quantitative polymerase chain reaction assay able to detect all 3 OPV strains in fecal samples. The assay used a KingFisher Duo Prime system for viral RNA isolation and extraction. Positive samples were retested and Sanger sequenced for verification of Sabin serotype identity. Results: The 95% lower limit of detection was determined to be 3 copies per reaction for Sabin 1 and 3 and 4 copies per reaction for Sabin 2, with no cross-reactivity between the 3 serotypes and their primers. A total of 554 samples (3.6%) were positive, with 304 positive samples (54.9%) containing >1 serotype. Of the positive samples, 476 (85.9%) contained enough RNA to be sequenced, and of these all sequences were Sabin serotypes. The previous assay we used could process 48 samples in a 10-hour period, whereas the new assay processed >100 samples in 6 hours. Conclusions: The new high-throughput, multiplex reverse-transcription quantitative polymerase chain reaction assay allowed for sensitive and specific detection of OPV serotypes while greatly decreasing sample handling and processing time. We were able to sequence 72.4% of the 210 positive samples in the cycle threshold range of 35-37.


Asunto(s)
Reacción en Cadena de la Polimerasa Multiplex/métodos , Poliomielitis/transmisión , Poliovirus/aislamiento & purificación , Preescolar , Reacciones Cruzadas , Heces/virología , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Lactante , Límite de Detección , México/epidemiología , Poliomielitis/epidemiología , Poliomielitis/prevención & control , Poliomielitis/virología , Poliovirus/genética , Poliovirus/inmunología , Vacuna Antipolio Oral , Sensibilidad y Especificidad , Análisis de Secuencia de ADN , Serogrupo
12.
Clin Infect Dis ; 67(suppl_1): S98-S102, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376093

RESUMEN

Background: Currently, the primary mechanism for poliovirus detection is acute flaccid paralysis (AFP) surveillance, with environmental sampling serving as a complement. However, as AFP cases drop, environmental surveillance will become increasingly critical for poliovirus detection. Mexico provides a natural environment to study oral polio vaccine (OPV) transmission, as it provides routine injected polio vaccine immunization and biannual OPV campaigns in February and May. Methods: As part of a study of OPV transmission in which 155 children were vaccinated with OPV, monthly sewage samples were collected from rivers leading from 3 indigenous Mexican villages (Capoluca, Campo Grande, and Tuxpanguillo) from February to May 2015. Samples were also collected from October 2015 to October 2017, during which time there were standard OPV campaigns. Samples were analyzed for the presence of OPV serotypes, using a real-time qualitative polymerase chain reaction assay capable of detecting as few as 9, 12, and 10 copies/100 µL of viral ribonucleic acid for OPV serotypes 1, 2, and 3 (OPV-1, -2, and -3), respectively. Included here are 54 samples, taken up to November 2016. Results: Of the 54 samples, 13 (24%) were positive for OPV. After the vaccination of 155 children in February 2015, OPV was found 2 months after vaccination. After unrestricted OPV administration in February 2016, OPV was detected in sewage up to 8 months after vaccination. OPV-3 was found in 11 of the 13 positive samples (85%), OPV-2 was found in 3 positive samples (23%), and OPV-1 was found in 1 sample (8%). Conclusions: OPV can be detected even when small amounts of the vaccine are introduced into a community, as shown by OPV-positive sewage samples even when only 155 children were vaccinated. When OPV vaccination was unrestricted, sewage samples were positive up to 8 months after vaccination, implying community OPV circulation for at least 8 months. OPV-3 was the serotype most found in these samples, indicating prolonged transmission of OPV-3 when compared to the other serotypes. Future work could compare the phylogenetic variance of OPV isolates from sewage after OPV vaccinations.


Asunto(s)
Monitoreo del Ambiente , Reacción en Cadena de la Polimerasa Multiplex/métodos , Poliomielitis/transmisión , Vacuna Antipolio Oral , Poliovirus/aislamiento & purificación , Vacunación , Humanos , México , Poliomielitis/inmunología , Poliomielitis/virología , Poliovirus/genética , Poliovirus/inmunología , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Ríos/virología , Sensibilidad y Especificidad , Serogrupo , Aguas del Alcantarillado/virología , Esparcimiento de Virus
13.
Clin Infect Dis ; 67(suppl_1): S115-S120, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376084

RESUMEN

Background: We aimed to elucidate household and community-level shedding and transmission of trivalent oral polio vaccine (tOPV) in communities with inactivated polio vaccine (IPV) routine immunization after tOPV is administered during a national health week (NHW). Methods: We conducted a 3-arm, randomized trial with data collected at baseline through 10 weeks post-NHW in households with at least 1 child <5 years old in 3 semi-rural communities in Orizaba, Mexico. Selected communities were geographically isolated but socio-demographically similar. Each community was assigned an oral polio vaccine (OPV) immunization rate: 10, 30, or 70% of participating households. From 2653 households in the 3 communities, ~150 households per community were selected, for 466 in total. Households were randomized as vaccinated or unvaccinated, with only 1 child under 5 in the vaccinated household receiving OPV during the February 2015 NHW. No other community members received OPV during this NHW. Stool samples were collected up to 10 weeks post-vaccination for all members of the 466 study households and were analyzed for the presence of OPV serotypes using a multiplex polymerase chain reaction assay. Results: We will report on the factors associated with, and incidence and duration of, household and community shedding and transmission of OPV. The secondary outcomes will characterize temporal and geospatial OPV serotype shedding patterns. Conclusions: The current global polio eradication plan relies on transitioning away from OPV to IPV. This study contributes to understanding patterns of OPV shedding and transmission dynamics in communities with primary IPV immunity, in order to optimize the reduction of OPV transmission.


Asunto(s)
Poliomielitis/transmisión , Vacuna Antipolio de Virus Inactivados/administración & dosificación , Vacuna Antipolio Oral/administración & dosificación , Poliovirus/inmunología , Vacunación , Adulto , Preescolar , Composición Familiar , Heces/virología , Femenino , Humanos , Lactante , Masculino , México/epidemiología , Poliomielitis/epidemiología , Poliomielitis/prevención & control , Poliomielitis/virología , Características de la Residencia , Serogrupo , Esparcimiento de Virus
14.
Clin Infect Dis ; 67(suppl_1): S4-S17, 2018 10 30.
Artículo en Inglés | MEDLINE | ID: mdl-30376097

RESUMEN

Background: The World Health Assembly 2012 Polio Eradication and Endgame Strategic Plan calls for the eventual cessation of all oral polio vaccines (OPVs), to be replaced with inactivated polio vaccine (IPV); however, IPV induces less robust mucosal immunity than OPV. This study characterized household and community OPV shedding and transmission after OPV vaccination within primarily IPV-vaccinated communities. Methods: Households in 3 IPV-vaccinated Mexican communities were randomized to receive 3 levels of OPV vaccination coverage (70%, 30%, or 10%). Ten stool samples were collected from all household members over 71 days. Analysis compared vaccinated subjects, household contacts of vaccinated subjects, and subjects in unvaccinated households. Logistic and Cox regression models were fitted to characterize transmission of OPV by coverage and household vaccination status. Results: Among 148 vaccinated children, 380 household contacts, and 1124 unvaccinated community contacts, 78%, 18%, and 7%, respectively, shed OPV. Community and household contacts showed no differences in transmission (odds ratio [OR], 0.67; 95% confidence interval [CI], .37-1.20), in shedding trajectory (OR, 0.61; 95% CI, .35-1.07), or in time to shedding (hazard ratio, 0.68; 95% CI, .39-1.19). Transmission began as quickly as 1 day after vaccination and persisted as long as 71 days after vaccination. Transmission within unvaccinated households differed significantly across vaccination coverage communities, with the 70% community experiencing the most transmissions (15%), and the 10% community experiencing the least (4%). These trends persisted over time and in the time to first shedding analyses. Conclusions: Transmission did not differ between household contacts of vaccinees and unvaccinated households. Understanding poliovirus transmission dynamics is important for postcertification control.


Asunto(s)
Poliomielitis/prevención & control , Vacuna Antipolio de Virus Inactivados/administración & dosificación , Vacuna Antipolio Oral/administración & dosificación , Poliovirus/inmunología , Cobertura de Vacunación , Vacunación , Adolescente , Adulto , Niño , Preescolar , Monitoreo Epidemiológico , Composición Familiar , Femenino , Humanos , Lactante , Estudios Longitudinales , Masculino , México/epidemiología , Poliomielitis/epidemiología , Poliomielitis/transmisión , Poliomielitis/virología , Poliovirus/fisiología , Esparcimiento de Virus
17.
Artículo en Inglés | MEDLINE | ID: mdl-38709334

RESUMEN

OBJECTIVES: To examine the experiences of pregnant Hispanic/Latine people with COVID-19, as well as their perspectives on COVID-19 vaccination in pregnancy. METHODS: We interviewed birthing parents who received care from a teaching hospital in California and tested positive for COVID-19 during pregnancy or delivery. We analyzed transcripts using the constant comparative method for analyzing data to using a phenomological epidemiological approach. We used root cause analysis to identify consistent themes across interviews and assess relationships between social determinants of health and COVID-19 infectivity. RESULTS: We interviewed 14 women from November 2021 to June 2022. Participants reported COVID-19 adversely impacted their clinical care and well-being during pregnancy or postpartum. Impacts among Spanish-speaking participants included unexpected financial hardships, challenges navigating in-patient experiences, and difficulty securing reliable childcare. While most participants were at least partially vaccinated, participants also described doubts and concerns about the vaccine. CONCLUSIONS: Our findings suggest that Spanish-speaking Hispanic/Latine patients could benefit from receiving more information about COVID-19 in pregnancy from their healthcare providers. Leveraging familial and social networks, providing reliable information in people's preferred language, and increasing communication through trusted partners may also help combat vaccine hesitancy.

18.
medRxiv ; 2023 Mar 21.
Artículo en Inglés | MEDLINE | ID: mdl-36993386

RESUMEN

There is an increasing burden of circulating vaccine-derived polioviruses (cVDPVs) due to the continued use of oral poliovirus vaccine (OPV). However, the informativeness of routine OPV VP1 sequencing for the early identification of viruses carrying virulence-associated reversion mutations has not been directly evaluated in a controlled setting. We prospectively collected 15,331 stool samples to track OPV shedding from vaccinated children and their contacts for ten weeks following an immunization campaign in Veracruz State, Mexico and sequenced VP1 genes from 358 samples. We found that OPV was genetically unstable and evolves at an approximately clocklike rate that varies across serotypes and by vaccination status. Alarmingly, 28% (13/47) of OPV-1, 12% (14/117) OPV-2, and 91% (157/173) OPV-3 of Sabin-like viruses had ≥1 known reversion mutation. Our results suggest that current definitions of cVDPVs may exclude circulating virulent viruses that pose a public health risk and underscore the need for intensive surveillance following OPV use.

19.
NPJ Vaccines ; 8(1): 137, 2023 Sep 25.
Artículo en Inglés | MEDLINE | ID: mdl-37749086

RESUMEN

There is an increasing burden of circulating vaccine-derived polioviruses (cVDPVs) due to the continued use of oral poliovirus vaccine (OPV). However, the informativeness of routine OPV VP1 sequencing for the early identification of viruses carrying virulence-associated reversion mutations has not been directly evaluated in a controlled setting. We prospectively collected 15,331 stool samples to track OPV shedding from children receiving OPV and their contacts for ten weeks following an immunization campaign in Veracruz State, Mexico and sequenced VP1 genes from 358 samples. We found that OPV was genetically unstable and evolves at an approximately clocklike rate that varies across serotypes and by vaccination status. Overall, 61% (11/18) of OPV-1, 71% (34/48) OPV-2, and 96% (54/56) OPV-3 samples with available data had evidence of a reversion at the key 5' UTR attenuating position and 28% (13/47) of OPV-1, 12% (14/117) OPV-2, and 91% (157/173) OPV-3 of Sabin-like viruses had ≥1 known reversion mutations in the VP1 gene. Our results are consistent with previous work documenting rapid reversion to virulence of OPV and underscores the need for intensive surveillance following OPV use.

20.
Front Reprod Health ; 5: 1236588, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38107484

RESUMEN

Introduction: Adolescent girls and young women (AGYW) face a high burden of gender-based violence (GBV) worldwide. The COVID-19 pandemic and associated policies led to global increases in GBV, decreased access to resources, and disruptions of pathways to care. We aimed to understand the effects of COVID-19 on AGYW affected by GBV in Kisumu, Kenya, as well as to identify possible interventions to mitigate those effects. Methods: Focus group discussions (FGDs) were conducted with AGYW aged 15-25 with a history of exposure to GBV. AGYW were split into age-matched groups; aged 15-19 for younger groups and 19-25 for older groups. Discussions focused on how COVID-19 affected experiences of GBV, access to care services, economic and social outcomes, and opportunities for interventions to mitigate negative impacts of COVID-19 and violence. Results: Five FGDs with 46 AGYW were completed in June-September 2021. AGYW described increases in all types of GBV, particularly sexual abuse and intimate partner violence. Early marriage and subsistence transactional sex also increased. AGYW described violence as both a cause and effect of poor economic, social and health consequences related to the pandemic. Notably, AGYW emphasized stress, lack of mental health support and increased substance use as risk factors for violence, and discussed the deleterious mental health effects of violence-particularly in the wake of disruption of mental health services. COVID-19 disrupted referrals to violence-related services, and reduced access to both medical services and psychosocial services. AGYW believed that interventions focused on improving mental health as well as economic empowerment would be the most feasible and acceptable in mitigating the negative effects of COVID-19 and related exacerbations in violence. Discussion: AGYW reported increases in almost all forms of GBV during the pandemic, with related exacerbation in mental health. Concurrently, AGYW endorsed decreased access to care services. As there is no evidence that violence and mental health challenges will quickly resolve, there is an urgent need to identify and implement interventions to mitigate these negative effects.

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