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1.
PLoS Comput Biol ; 18(7): e1010308, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35857774

RESUMEN

The explosive outbreaks of COVID-19 seen in congregate settings such as prisons and nursing homes, has highlighted a critical need for effective outbreak prevention and mitigation strategies for these settings. Here we consider how different types of control interventions impact the expected number of symptomatic infections due to outbreaks. Introduction of disease into the resident population from the community is modeled as a stochastic point process coupled to a branching process, while spread between residents is modeled via a deterministic compartmental model that accounts for depletion of susceptible individuals. Control is modeled as a proportional decrease in the number of susceptible residents, the reproduction number, and/or the proportion of symptomatic infections. This permits a range of assumptions about the density dependence of transmission and modes of protection by vaccination, depopulation and other types of control. We find that vaccination or depopulation can have a greater than linear effect on the expected number of cases. For example, assuming a reproduction number of 3.0 with density-dependent transmission, we find that preemptively reducing the size of the susceptible population by 20% reduced overall disease burden by 47%. In some circumstances, it may be possible to reduce the risk and burden of disease outbreaks by optimizing the way a group of residents are apportioned into distinct residential units. The optimal apportionment may be different depending on whether the goal is to reduce the probability of an outbreak occurring, or the expected number of cases from outbreak dynamics. In other circumstances there may be an opportunity to implement reactive disease control measures in which the number of susceptible individuals is rapidly reduced once an outbreak has been detected to occur. Reactive control is most effective when the reproduction number is not too high, and there is minimal delay in implementing control. We highlight the California state prison system as an example for how these findings provide a quantitative framework for understanding disease transmission in congregate settings. Our approach and accompanying interactive website (https://phoebelu.shinyapps.io/DepopulationModels/) provides a quantitative framework to evaluate the potential impact of policy decisions governing infection control in outbreak settings.


Asunto(s)
COVID-19 , COVID-19/epidemiología , COVID-19/prevención & control , Brotes de Enfermedades/prevención & control , Humanos , Control de Infecciones , Casas de Salud , Vacunación
2.
Clin Infect Dis ; 72(9): 1623-1626, 2021 05 04.
Artículo en Inglés | MEDLINE | ID: mdl-32211781

RESUMEN

BACKGROUND: The Ending the HIV Epidemic initiative, which aims to decrease the annual incidence of HIV infections in the United States (US) by 90% over the next decade, will require growth of a limited HIV provider workforce. Existing HIV training pathways within Family Medicine (FM) and Internal Medicine (IM) residency programs may address the shortage of HIV medical providers, but their curricula and outcomes have not previously been assessed. METHODS: We identified HIV residency pathways via literature review, Internet search, and snowball sampling and designed a cross-sectional study of existing HIV pathways in the US. This survey of pathway directors included 33 quantitative items regarding pathway organization, curricular content, graduate outcomes, and challenges. We used descriptive statistics to summarize responses. RESULTS: Twenty-five residency programs with dedicated HIV pathways in the US were identified (14 FM and 11 IM), with most located in the West and Northeast. All 25 (100%) pathway directors completed the survey. Since 2006, a total of 228 residents (77 FM and 151 IM) have graduated from these HIV pathways. Ninety (39%) of 228 pathway graduates provide primary care to persons with HIV (PWH). CONCLUSIONS: HIV pathways are effective in graduating providers who can care for PWH, but generally are not located in nor do graduates practice in the geographic areas of highest need. Our findings can inform quality improvement for existing programs, development of new pathways, and workforce development strategies. Specifically, expanding pathways in regions of greatest need and incentivizing pathway graduates to work in these regions could augment the HIV workforce.


Asunto(s)
Infecciones por VIH , Internado y Residencia , Estudios Transversales , Curriculum , Educación de Postgrado en Medicina , VIH , Infecciones por VIH/epidemiología , Humanos , Estados Unidos/epidemiología
3.
J Gen Intern Med ; 35(9): 2738-2742, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32632787

RESUMEN

In the face of the continually worsening COVID-19 pandemic, jails and prisons have become the greatest vectors of community transmission and are a point of heightened crisis and fear within the global crisis. Critical public health tools to mitigate the spread of COVID-19 are medical isolation and quarantine, but use of these tools is complicated in prisons and jails where decades of overuse of punitive solitary confinement is the norm. This has resulted in advocates denouncing the use of any form of isolation and attorneys litigating to end its use. It is essential to clarify the critical differences between punitive solitary confinement and the ethical use of medical isolation and quarantine during a pandemic. By doing so, then all those invested in stopping the spread of COVID-19 in prisons can work together to integrate medically sound, humane forms of medical isolation and quarantine that follow community standards of care rather than punitive forms of solitary confinement to manage COVID-19.


Asunto(s)
Betacoronavirus , Infecciones por Coronavirus/epidemiología , Atención a la Salud/métodos , Aislamiento de Pacientes/métodos , Neumonía Viral/epidemiología , Prisiones , Aislamiento Social , COVID-19 , Infecciones por Coronavirus/prevención & control , Infecciones por Coronavirus/psicología , Atención a la Salud/normas , Humanos , Pandemias/prevención & control , Aislamiento de Pacientes/psicología , Aislamiento de Pacientes/normas , Neumonía Viral/prevención & control , Neumonía Viral/psicología , Prisiones/normas , Cuarentena/métodos , Cuarentena/psicología , Cuarentena/normas , SARS-CoV-2 , Aislamiento Social/psicología , Estados Unidos/epidemiología
6.
AIDS Behav ; 23(6): 1586-1589, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30259347

RESUMEN

We examined three waves of National HIV Behavioral Surveillance surveys of persons who inject drugs (PWID) in San Francisco to assess meeting UNAIDS 90-90-90 targets. Diagnosis of PWID living with HIV increased from 64.4% in 2009 to 80.5% in 2015. Antiretroviral treatment among those diagnosed did not improve (63.8% in 2009, 62.9% in 2015). Programs in San Francisco have not achieved the first two UNAIDS targets for PWID by 2015. In a context of a rising opioid epidemic, there is urgent need for increased case finding of PWID living with HIV who are undiagnosed with rapid linkage to treatment.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/epidemiología , Abuso de Sustancias por Vía Intravenosa/epidemiología , Adulto , Sistema de Vigilancia de Factor de Riesgo Conductual , Femenino , Infecciones por VIH/diagnóstico , Encuestas Epidemiológicas , Humanos , Masculino , Evaluación de Programas y Proyectos de Salud , San Francisco/epidemiología , Adulto Joven
7.
Exp Mol Pathol ; 102(2): 251-254, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-28189546

RESUMEN

Diffuse lymphangiomatosis is a rare disorder characterized by abnormal proliferation of lymphatic channels. It can involve just one organ or multiple organs, such as liver, spleen, lungs, and bone. This disorder generally presents in children and young adults, but in rare cases, patients first present with symptoms in adulthood. Here, we describe a 48-year-old HIV-positive man who presented with shortness of breath. Computed tomography scan revealed a large right-sided pleural effusion and a heterogeneously enhancing liver. Thoracentesis demonstrated a chylous effusion and subsequent liver biopsy revealed a proliferation of dilated lymphatics to establish a diagnosis of lymphangiomatosis.


Asunto(s)
Infecciones por VIH/fisiopatología , Linfangioma/diagnóstico , Linfangioma/fisiopatología , Antirreumáticos/uso terapéutico , Bevacizumab/uso terapéutico , Proliferación Celular , Infecciones por VIH/tratamiento farmacológico , Humanos , Pulmón/patología , Linfangioma/tratamiento farmacológico , Vasos Linfáticos/citología , Vasos Linfáticos/patología , Masculino , Persona de Mediana Edad , Derrame Pleural/metabolismo , Propranolol/uso terapéutico , Sirolimus/uso terapéutico , Tomografía Computarizada por Rayos X
9.
Malar J ; 14: 331, 2015 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-26306395

RESUMEN

BACKGROUND: In 2011, Uganda's Ministry of Health switched policy from presumptive treatment of malaria to recommending parasitological diagnosis prior to treatment, resulting in an expansion of diagnostic services at all levels of public health facilities including hospitals. Despite this change, anti-malarial drugs are often prescribed even when test results are negative. Presented is data on anti-malarial prescription practices among hospitalized children who underwent diagnostic testing after adoption of new treatment guidelines. METHODS: Anti-malarial prescription practices were collected as part of an inpatient malaria surveillance program generating high quality data among children admitted for any reason at government hospitals in six districts. A standardized medical record form was used to collect detailed patient information including presenting symptoms and signs, laboratory test results, admission and final diagnoses, treatments administered, and final outcome upon discharge. RESULTS: Between July 2011 and December 2013, 58,095 children were admitted to the six hospitals (hospital range 3294-20,426).A total of 56,282 (96.9 %) patients were tested for malaria, of which 26,072 (46.3 %) tested positive (hospital range 5.9-57.3 %). Among those testing positive, only 84 (0.3 %) were first tested after admission and 295 of 30,389 (1.0 %) patients who tested negative at admission later tested positive. Of 30,210 children with only negative test results, 11,977 (39.6 %) were prescribed an anti-malarial (hospital range 14.5-53.6 %). The proportion of children with a negative test result who were prescribed an anti-malarial fluctuated over time and did not show a significant trend at any site with the exception of one hospital where a steady decline was observed. Among those with only negative test results, children 6-12 months of age (aOR 3.78; p < 0.001) and those greater than 12 months of age (aOR 4.89; p < 0.001) were more likely to be prescribed an anti-malarial compared to children less than 6 months of age. Children with findings suggestive of severe malaria were also more likely to be prescribed an anti-malarial after a negative test result (aOR 1.98; p < 0.001). CONCLUSIONS: Despite high testing rates for malaria at all sites, prescription of anti-malarials to patients with negative test results remained high, with the exception of one site where a steady decline occurred.


Asunto(s)
Antimaláricos/uso terapéutico , Hospitalización/estadística & datos numéricos , Hospitales Públicos/estadística & datos numéricos , Malaria/tratamiento farmacológico , Prescripciones/estadística & datos numéricos , Vigilancia en Salud Pública , Adolescente , Niño , Preescolar , Humanos , Lactante , Recién Nacido , Malaria/epidemiología , Uganda/epidemiología
10.
Behav Brain Sci ; 38: e135, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26787456

RESUMEN

We argue that the history of political diversity in social psychology may be better characterized by stability than by a large shift toward liberalism. The branch of social psychology that focuses on political issues has defined social problems from a liberal perspective since at least the 1930s. Although a lack of ideological diversity within the discipline can pose many of the problems noted by Duarte et al., we suggest that these problems (a) are less apparent when the insights of social psychology are pitted against the insights from other social science disciplines, and (b) are less pressing than the need for other types of diversity in the field, especially ethnic and racial diversity.


Asunto(s)
Política , Psicología Social , Humanos , Psicología , Grupos Raciales , Problemas Sociales , Ciencias Sociales
11.
Vaccine ; 42(12): 3057-3065, 2024 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-38584059

RESUMEN

Incarcerated populations experienced high rates of SARS-CoV-2 infection and death during early phases of the COVID-19 pandemic. To evaluate vaccine effectiveness in the carceral context, we investigated the first outbreak of COVID-19 in a California state prison following widespread rollout of vaccines to residents in early 2021. We identified a cohort of 733 state prison residents presumed to be exposed between May 14 and June 22, 2021. 46.9 % (n = 344) were vaccinated, primarily with two doses of mRNA-1273 (n = 332, 93.6 %). In total, 92 PCR-positive cases were identified, of which 14 (14.5 %) occurred among mRNA-1273 vaccinated residents. No cases required hospitalization. All nine isolates collected belonged to the Alpha (B.1.1.7) variant. We used Cox proportional hazard regression to estimate vaccine effectiveness for at least one dose of any vaccine at the start of the outbreak. Vaccine effectiveness was 86 % (95 % CI: 75 %-97 %) against PCR-confirmed infection, with similar results for symptomatic infection. Higher rates of building-level vaccine uptake were associated with a lower overall rate of PCR-confirmed infection and symptomatic infection among unvaccinated residents. Among unvaccinated residents who lived in shared cells at the time of presumed exposure, exposure to a vaccinated cellmate was associated with a 38% (95% CI: 0.37, 1.04) lower hazard rate of PCR-confirmed infection over the study period. In this outbreak involving the Alpha SARS-CoV-2 variant, vaccination conferred direct and possibly indirect protection against SARS-CoV-2 infection and symptomatic COVID-19. Our results support the importance of vaccine uptake in mitigating outbreaks and severe disease in the prison setting and the consideration of community vaccination levels in policy and infection response.


Asunto(s)
COVID-19 , Prisiones , SARS-CoV-2 , Humanos , Vacuna nCoV-2019 mRNA-1273 , Pandemias , Eficacia de las Vacunas , COVID-19/epidemiología , COVID-19/prevención & control , California/epidemiología , Brotes de Enfermedades/prevención & control
12.
Malar J ; 12: 252, 2013 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-23870515

RESUMEN

BACKGROUND: Most African countries have adopted artemisinin-based combination therapy (ACT) as the first-line treatment for uncomplicated malaria. The World Health Organization now recommends limiting anti-malarial treatment to those with a positive malaria test result. Limited data exist on how these policies have affected ACT prescription practices. METHODS: Data were collected from all outpatients presenting to six public health facilities in Uganda as part of a sentinel site malaria surveillance programme. Training in case management, encouragement of laboratory-based diagnosis of malaria, and regular feedback were provided. Data for this report include patients with laboratory confirmed malaria who were prescribed anti-malarial therapy over a two-year period. Patient visits were analysed in two groups: those considered ACT candidates (defined as uncomplicated malaria with no referral for admission in patients ≥ 4 months of age and ≥ 5 kg in weight) and those who may not have been ACT candidates. Associations between variables of interest and failure to prescribe ACT to patients who were ACT candidates were estimated using multivariable logistic regression. RESULTS: A total of 51,355 patient visits were included in the analysis and 46,265 (90.1%) were classified as ACT candidates. In the ACT candidate group, 94.5% were correctly prescribed ACT. Artemether-lumefantrine made up 97.3% of ACT prescribed. There were significant differences across the sites in the proportion of patients for whom there was a failure to prescribe ACT, ranging from 3.0-9.3%. Young children and woman of childbearing age had higher odds of failure to receive an ACT prescription. Among patients who may not have been ACT candidates, the proportion prescribed quinine versus ACT differed based on if the patient had severe malaria or was referred for admission (93.4% vs 6.5%) or was below age or weight cutoffs for ACT (41.4% vs 57.2%). CONCLUSIONS: High rates of compliance with recommended ACT use can be achieved in resource-limited settings. The unique health facility-based malaria surveillance system operating at these clinical sites may provide a framework for improving appropriate ACT use at other sites in sub-Saharan Africa.


Asunto(s)
Antimaláricos/uso terapéutico , Adhesión a Directriz/estadística & datos numéricos , Malaria/tratamiento farmacológico , Pacientes Ambulatorios , Prescripciones/estadística & datos numéricos , Adolescente , Adulto , Artemisininas/uso terapéutico , Niño , Preescolar , Quimioterapia Combinada/métodos , Utilización de Medicamentos/estadística & datos numéricos , Femenino , Humanos , Lactante , Lactonas/uso terapéutico , Masculino , Persona de Mediana Edad , Embarazo , Uganda , Adulto Joven
13.
J Exp Psychol Gen ; 152(2): 410-424, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36006732

RESUMEN

Historical evidence suggests that White Americans' support for gun rights (i.e., opposition to gun control) is challenged by Black Americans exercising their legal rights to guns (e.g., The Black Panther Party and the Mulford Act of 1967). Here, we examined two empirical questions. First, we tested whether White Americans implicitly racialize gun rights as "White." In a preregistered study employing a novel IAT, racially resentful White Americans indirectly associated gun rights with White (and not Black) people. Moreover, this association was not primarily based in partisanship. Racial resentment overwhelmed the effect of party identification in explaining this association (Study 1). Given racial resentment typically predicts stronger support for gun rights (Filindra & Kaplan, 2015; O'Brien et al., 2013), we next examined whether Black legal gun ownership undermines gun rights support among racially resentful White Americans across two studies (total N = 773), including a nationally representative sample of White partisans. In both studies, racially resentful White Americans expressed less support for a gun right (i.e., concealed-carry) when informed that Black (vs. White) Americans showed greater utilization of the gun right (Studies 2 and 3). Study 3 provided initial evidence suggesting that the observed reduced support is more closely linked to concerns about identity than security. Overall, these results support that Black legal gun ownership can reduce opposition to gun control among gun rights' most entrenched advocates. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Asunto(s)
Armas de Fuego , Humanos , Propiedad , Blanco , Prejuicio , Política
14.
J Exp Psychol Hum Percept Perform ; 49(7): 999-1015, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37227858

RESUMEN

This study examines whether scrambling the order of events in a tonal chord sequence inhibits the speed and accuracy of processing in two behavioral harmonic priming experiments. Sixteen 9-chord sequences were adapted from Bach's chorales that either remained unchanged (thereby reflecting high temporal coherence) or were scrambled to produce increasingly incoherent sequences (i.e., medium or low). To produce the scrambled conditions, a finite-context (or n-gram) model trained on a corpus of chord annotations and then identified the scrambled versions (scrambling chords 2-8) that produced high estimates of model surprisal. In both experiments, 60 participants (30 musicians) indicated as quickly as possible whether the target chord was in or out of tune, where out-of-tune trials were either fixed at a tuning level of 40 cents sharp relative to the preceding context (Experiment 1), or at a tuning level representing the intonation discrimination threshold of each participant, which was estimated using an adaptive staircasing procedure before the main session began (Experiment 2). Correct response times and sensitivity measures replicated the high-to-low staircase found in the model estimates, suggesting harmonic priming effects reflect the order of chords in a sequence. Implications for topological and temporal models of tonal-harmonic structure are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Asunto(s)
Percepción Auditiva , Música , Humanos , Percepción Auditiva/fisiología , Percepción de la Altura Tonal , Tiempo de Reacción
15.
Nat Med ; 29(2): 358-365, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36593393

RESUMEN

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) breakthrough infections in vaccinated individuals and reinfections in previously infected individuals have become increasingly common. Such infections highlight a broader need to understand the contribution of vaccination, including booster doses, and natural immunity to the infectiousness of individuals with SARS-CoV-2 infections, especially in high-risk populations with intense transmission, such as in prisons. Here we show that both vaccine-derived and naturally acquired immunity independently reduce the infectiousness of persons with Omicron variant SARS-CoV-2 infections in a prison setting. Analyzing SARS-CoV-2 surveillance data from December 2021 to May 2022 across 35 California state prisons with a predominately male population, we estimate that unvaccinated Omicron cases had a 36% (95% confidence interval (CI): 31-42%) risk of transmitting infection to close contacts, as compared to a 28% (25-31%) risk among vaccinated cases. In adjusted analyses, we estimated that any vaccination, prior infection alone and both vaccination and prior infection reduced an index case's risk of transmitting infection by 22% (6-36%), 23% (3-39%) and 40% (20-55%), respectively. Receipt of booster doses and more recent vaccination further reduced infectiousness among vaccinated cases. These findings suggest that, although vaccinated and/or previously infected individuals remain highly infectious upon SARS-CoV-2 infection in this prison setting, their infectiousness is reduced compared to individuals without any history of vaccination or infection. This study underscores benefit of vaccination to reduce, but not eliminate, transmission.


Asunto(s)
COVID-19 , Masculino , Humanos , SARS-CoV-2 , Reinfección , Infección Irruptiva
16.
J STEM Educ Res ; 5(3): 479-508, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36258752

RESUMEN

This study explored the implementation of a novel approach to dual credit referred to as the facilitator model that can be suited for STEM-focused coursework such as courses focused on engineering, design, technology, and innovation. Unlike other models, high school teachers facilitate the implementation of a college course for both high school and college credit in collaboration with a university instructor who evaluates student learning. This novel approach was specifically implemented for an open-ended undergraduate design course within an engineering technology college, similar to many first-year engineering course experiences that emphasize project-based learning, from a large research-intensive public university. For this study, the facilitator model was piloted with five high school teachers as facilitators of an undergraduate design course for dual credit at two innovative, STEM-focused public charter schools. The qualitative research design focused on examining (1) teacher needs while implementing, and perceptions of, the dual credit facilitator model for an undergraduate design course in urban public charter schools and (2) the impact of this model on student learning. This study included the collection and analysis of over 90 h of interviews, focus groups, surveys, and observations. Results provide a promising outlook for the use of the facilitator model when delivering dual credit content that is open ended and within the context of design, technology, and engineering by (1) navigating multiple institutional policies and processes related to dual-credit implementation, (2) providing ongoing support and fostering collaboration between high schools and university, (3) enabling students to earn directly transcripted college credits that count as a required course toward degree completion, and (4) increasing affordability and access to dual credit coursework. These potential advantages over other dual credit models can help address barriers that may limit access to dual credit coursework, specifically for underserved high schools. Supplementary Information: The online version contains supplementary material available at 10.1007/s41979-022-00075-5.

17.
Health Aff (Millwood) ; 41(8): 1191-1201, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35914202

RESUMEN

The number of older adults (age fifty-five or older) incarcerated in US prisons reached an all-time high just as COVID-19 entered correctional facilities in 2020. However, little is known about COVID-19's impact on incarcerated older adults. We compared COVID-19 outcomes between older and younger adults in California state prisons from March 1, 2020, to October 9, 2021. Adjusted odds ratios (aORs) revealed an increasing risk for adverse COVID-19 outcomes among older age groups (ages 55-64, 65-74, and 75 or older) compared with younger adults, including for documented infection (aOR, 1.3, 1.4, and 1.4, respectively) and hospitalization with COVID-19 (aOR, 4.6, 8.7, and 15.1, respectively). Moreover, although accounting for 17.3 percent of the California state prison population, older adults represented 85.8 percent of this population's COVID-19-related deaths. Yet a smaller percentage of older adults than younger adults were released from prison during the pandemic. The differential rates of morbidity and mortality experienced by incarcerated older adults should be considered in future pandemic response strategies regarding prisons.


Asunto(s)
COVID-19 , Prisioneros , Anciano , COVID-19/epidemiología , California/epidemiología , Humanos , Persona de Mediana Edad , Pandemias , Prisiones
18.
Int J Prison Health ; 2022 06 10.
Artículo en Inglés | MEDLINE | ID: mdl-35678718

RESUMEN

PURPOSE: This study aims to characterize the June 2020 COVID-19 outbreak at San Quentin California State Prison and to describe what made San Quentin so vulnerable to uncontrolled transmission. DESIGN/METHODOLOGY/APPROACH: Since its onset, the COVID-19 pandemic has exposed and exacerbated the profound health harms of carceral settings, such that nearly half of state prisons reported COVID-19 infection rates that were four or more times (and up to 15 times) the rate found in the state's general population. Thus, addressing the public health crises and inequities of carceral settings during a respiratory pandemic requires analyzing the myriad factors shaping them. In this study, we reported observations and findings from environmental risk assessments during visits to San Quentin California State Prison. We complemented our assessments with analyses of administrative data. FINDINGS: For future respiratory pathogens that cannot be prevented with effective vaccines, this study argues that outbreaks will no doubt occur again without robust implementation of additional levels of preparedness - improved ventilation, air filtration, decarceration with emergency evacuation planning - alongside addressing the vulnerabilities of carceral settings themselves. ORIGINALITY/VALUE: This study addresses two critical aspects that are insufficiently covered in the literature: how to prepare processes to safely implement emergency epidemic measures when needed, such as potential evacuation, and how to address unique challenges throughout an evolving pandemic for each carceral setting.


Asunto(s)
COVID-19 , Pandemias , COVID-19/epidemiología , California/epidemiología , Brotes de Enfermedades/prevención & control , Humanos , Pandemias/prevención & control , Prisiones
19.
medRxiv ; 2022 Nov 21.
Artículo en Inglés | MEDLINE | ID: mdl-36299430

RESUMEN

SARS-CoV-2 breakthrough infections in vaccinated individuals and reinfections among previously infected individuals have become increasingly common. Such infections highlight a broader need to understand the contribution of vaccination, including booster doses, and natural immunity to the infectiousness of persons with SARS-CoV-2 infections, especially in high-risk populations with intense transmission such as prisons. Here, we show that both vaccine-derived and naturally acquired immunity independently reduce the infectiousness of persons with Omicron variant SARS-CoV-2 infections in a prison setting. Analyzing SARS-CoV-2 surveillance data from December 2021 to May 2022 across 35 California state prisons with a predominately male population, we estimate that unvaccinated Omicron cases had a 36% (95% confidence interval (CI): 31-42%) risk of transmitting infection to close contacts, as compared to 28% (25-31%) risk among vaccinated cases. In adjusted analyses, we estimated that any vaccination, prior infection alone, and both vaccination and prior infection reduced an index case's risk of transmitting infection by 22% (6-36%), 23% (3-39%) and 40% (20-55%), respectively. Receipt of booster doses and more recent vaccination further reduced infectiousness among vaccinated cases. These findings suggest that although vaccinated and/or previously infected individuals remain highly infectious upon SARS-CoV-2 infection in this prison setting, their infectiousness is reduced compared to individuals without any history of vaccination or infection, underscoring some benefit of vaccination to reduce but not eliminate transmission.

20.
BMJ Open ; 12(7): e060079, 2022 07 20.
Artículo en Inglés | MEDLINE | ID: mdl-35858724

RESUMEN

OBJECTIVE: To assess the impact of an interprofessional case-based training programme to enhance clinical knowledge and confidence among clinicians working in high HIV-burden settings in sub-Saharan Africa (SSA). SETTING: Health professions training institutions and their affiliated clinical training sites in 12 high HIV-burden countries in SSA. PARTICIPANTS: Cohort comprising preservice and in-service learners, from diverse health professions, engaged in HIV service delivery. INTERVENTION: A standardised, interprofessional, case-based curriculum designed to enhance HIV clinical competency, implemented between October 2019 and April 2020. MAIN OUTCOME MEASURES: The primary outcomes measured were knowledge and clinical confidence related to topics addressed in the curriculum. These outcomes were assessed using a standardised online assessment, completed before and after course completion. A secondary outcome was knowledge retention at least 6 months postintervention, measured using the same standardised assessment, 6 months after training completion. We also sought to determine what lessons could be learnt from this training programme to inform interprofessional training in other contexts. RESULTS: Data from 3027 learners were collected: together nurses (n=1145, 37.9%) and physicians (n=902, 29.8%) constituted the majority of participants; 58.1% were preservice learners (n=1755) and 24.1% (n=727) had graduated from training within the prior year. Knowledge scores were significantly higher, postparticipation compared with preparticipation, across all content domains, regardless of training level and cadre (all p<0.05). Among 188 learners (6.2%) who retook the test at >6 months, knowledge and self-reported confidence scores were greater compared with precourse scores (all p<0.05). CONCLUSION: To our knowledge, this is the largest interprofessional, multicountry training programme established to improve HIV knowledge and clinical confidence among healthcare professional workers in SSA. The findings are notable given the size and geographical reach and demonstration of sustained confidence and knowledge retention post course completion. The findings highlight the utility of interprofessional approaches to enhance clinical training in SSA.


Asunto(s)
Curriculum , Infecciones por VIH , Competencia Clínica , Estudios de Cohortes , Infecciones por VIH/terapia , Personal de Salud/educación , Humanos
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