Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 69
Filtrar
1.
Clin Infect Dis ; 76(2): 307-314, 2023 01 13.
Artigo em Inglês | MEDLINE | ID: mdl-36124683

RESUMO

BACKGROUND: Black and Hispanic/Latino men who have sex with men (MSM) are disproportionately affected by human immunodeficiency virus (HIV). In the Targeted Highly Effective Interventions to Reverse the HIV Epidemic (THRIVE) demonstration project, 7 community collaboratives were developed to provide comprehensive HIV prevention services for these populations. METHODS: We analyzed National HIV Surveillance System data to determine the number of HIV diagnoses for each year from 2014 to 2019 among Black, Hispanic/Latino, and White MSM in 7 THRIVE-eligible Metropolitan Statistical Areas (MSAs) that were awarded funding and 12 THRIVE-eligible MSAs that were not awarded funding. We used generalized linear Poisson regression models to estimate adjusted estimated annual percentage changes (EAPCs) with 95% confidence intervals for HIV diagnosis rates controlling for HIV prevalence, viral suppression, HIV testing rates, preexposure prophylaxis (PrEP) prescription rates, poverty, education, and insurance status. RESULTS: We found larger estimated decreases in HIV diagnosis rates in THRIVE jurisdictions compared with non-THRIVE jurisdictions. The adjusted EAPC among Black MSM was -8.2 (-11.7 to -4.6) in THRIVE MSAs compared with -4.2 (-7.8 to -0.4) in non-THRIVE MSAs. The adjusted EAPC among Hispanic/Latino MSM was -8.6 (-12.2 to -4.8) in THRIVE MSAs compared with -2.6 (-5.1 to -0.1)in non-THRIVE MSAs. The adjusted EAPC among White MSM was -7.6 (-12.0 to -3.1) in THRIVE MSAs compared with 5.9 (1.8-10.1) in non-THRIVE MSAs. CONCLUSIONS: The THRIVE community collaborative model was associated with a decrease in HIV diagnoses among Black and Hispanic/Latino MSM. To achieve the goals of the US Ending the HIV Epidemic initiative, effective interventions aimed to increase PrEP use need to be focused on Black and Hispanic/Latino MSM.


Assuntos
Infecções por HIV , Profilaxia Pré-Exposição , Humanos , Masculino , Hispânico ou Latino , HIV , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Homossexualidade Masculina , Prevalência , Negro ou Afro-Americano
2.
Am J Public Health ; 113(9): 1019-1027, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37410983

RESUMO

Objectives. To describe HIV testing among clients in the Targeted Highly Effective Interventions to Reverse the HIV Epidemic (THRIVE) demonstration project and evaluate testing frequency. Methods. We identified factors associated with an average testing frequency of 180 days or less compared with more than 180 days using adjusted Poisson regression models. We performed the Kaplan-Meier survival analysis to compare time to diagnosis by testing frequency. Results. Among 5710 clients with 2 or more tests and no preexposure prophylaxis (PrEP) prescription, 42.4% were tested frequently. Black/African American clients were 21% less likely and Hispanic/Latino clients were 18% less likely to be tested frequently than were White clients. Among 71 Black/African American and Hispanic/Latino cisgender men who have sex with men and transgender women with HIV diagnoses, those with frequent testing had a median time to diagnosis of 137 days, with a diagnostic testing yield of 1.5% compared with those tested less frequently, with 559 days and 0.8% yield. Conclusions. HIV testing at least every 6 months resulted in earlier HIV diagnosis and was efficient. Persons in communities with high rates of HIV who are not on PrEP can benefit from frequent testing, and collaborative community approaches may help reduce disparities. (Am J Public Health. 2023;113(9):1019-1027. https://doi.org/10.2105/AJPH.2023.307341).


Assuntos
Infecções por HIV , Profilaxia Pré-Exposição , Minorias Sexuais e de Gênero , Pessoas Transgênero , Masculino , Humanos , Estados Unidos/epidemiologia , Feminino , Homossexualidade Masculina , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Profilaxia Pré-Exposição/métodos , Teste de HIV
3.
AIDS Behav ; 27(6): 1981-1988, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36417093

RESUMO

Our objective is to evaluate the effect of navigation on linkage to a PrEP provider among PrEP-eligible men who have sex with men (MSM) in THRIVE, a demonstration project in seven U.S. public health jurisdictions during 2015-2020. We describe PrEP linkage and navigation use among MSM in THRIVE. We performed multivariable probit regression modeling, controlling for demographic covariates, to estimate the association between navigation and linkage to a PrEP provider among MSM and to assess for disparities in linkage to PrEP among MSM who used navigation. Among 9538 PrEP-eligible MSM, 51.3% used navigation and 53.8% were linked to PrEP. From the three sites where navigation was optional and the main form of PrEP support, MSM who used navigation were 16.69 times (95% CI 13.07-21.32) more likely to link to PrEP compared with MSM who did not use navigation. Among 4895 MSM who used navigation from all seven sites, Black MSM were 21% less likely to link to PrEP compared with White MSM (aRR 0.79; 95% CI 0.74-0.83). Navigation is a promising strategy for improving uptake of PrEP among U.S. MSM, but disparities persist. Addressing the underlying causes of inequities will be important to end the HIV epidemic.


Assuntos
Infecções por HIV , Profilaxia Pré-Exposição , Minorias Sexuais e de Gênero , Humanos , Masculino , Negro ou Afro-Americano , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Homossexualidade Masculina , Brancos
4.
J Pak Med Assoc ; 73(7): 1408-1411, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37469052

RESUMO

Objective: To compare the efficacy of finger pressure and plastic wafers in terms of pain control during debonding. METHODS: This cross sectional study was conducted at the Department of Orthodontics, Armed Forces Institute of Dentistry, Rawalpindi, Pakistan, from January to June 2020, and comprised patients of either gender aged 13-21 years who had completed fixed orthodontic treatment with 0.022 brackets of Roth prescription and required debonding. The patients was divided into two equal groups. In group A, teeth were stabilised with finger pressure with cotton between the finger and teeth, and then debonding was done using open mouth technique. In group B, teeth were stabilised using a plastic wafer between maxillary and mandibular teeth, and then debonding was done using closed mouth technique. Pain was assessed using a visual analogue scale VAS. Data was analysed using SPSS 23. RESULTS: Of the 110 patients, each of the 2 groups had 55(50%) subjects. Overall, there were 35(32%) males and 75(68%) females. The mean age of the sample was 16±2.4 years. Mean pain scores among the males was 32.0±7.68 compared to 34.067±12.59 among the females (p>0.05). Subjects in group B had significantly less pain than those in group A (p<0.05). Conclusion: Plastic wafer was found to be more effective in terms of controlling pain during debonding compared to finger pressure.


Assuntos
Braquetes Ortodônticos , Masculino , Feminino , Humanos , Adolescente , Estudos Transversais , Dor/etiologia , Dor/prevenção & controle , Manejo da Dor , Plásticos
5.
MMWR Morb Mortal Wkly Rep ; 71(45): 1449-1456, 2022 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-36355615

RESUMO

On May 17, 2022, the Massachusetts Department of Health announced the first suspected case of monkeypox associated with the global outbreak in a U.S. resident. On May 23, 2022, CDC launched an emergency response (1,2). CDC's emergency response focused on surveillance, laboratory testing, medical countermeasures, and education. Medical countermeasures included rollout of a national JYNNEOS vaccination strategy, Food and Drug Administration (FDA) issuance of an emergency use authorization to allow for intradermal administration of JYNNEOS, and use of tecovirimat for patients with, or at risk for, severe monkeypox. During May 17-October 6, 2022, a total of 26,384 probable and confirmed* U.S. monkeypox cases were reported to CDC. Daily case counts peaked during mid-to-late August. Among 25,001 of 25,569 (98%) cases in adults with information on gender identity,† 23,683 (95%) occurred in cisgender men. Among 13,997 cisgender men with information on recent sexual or close intimate contact,§ 10,440 (75%) reported male-to-male sexual contact (MMSC) ≤21 days preceding symptom onset. Among 21,211 (80%) cases in persons with information on race and ethnicity,¶ 6,879 (32%), 6,628 (31%), and 6,330 (30%) occurred in non-Hispanic Black or African American (Black), Hispanic or Latino (Hispanic), and non-Hispanic White (White) persons, respectively. Among 5,017 (20%) cases in adults with information on HIV infection status, 2,876 (57%) had HIV infection. Prevention efforts, including vaccination, should be prioritized among persons at highest risk within groups most affected by the monkeypox outbreak, including gay, bisexual, and other men who have sex with men (MSM); transgender, nonbinary, and gender-diverse persons; racial and ethnic minority groups; and persons who are immunocompromised, including persons with advanced HIV infection or newly diagnosed HIV infection.


Assuntos
Infecções por HIV , Mpox , Minorias Sexuais e de Gênero , Adulto , Estados Unidos/epidemiologia , Humanos , Masculino , Feminino , Homossexualidade Masculina , Etnicidade , Infecções por HIV/prevenção & controle , Mpox/epidemiologia , Grupos Minoritários , Identidade de Gênero , Causas de Morte , Surtos de Doenças
6.
AIDS Care ; 34(5): 585-589, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-34159857

RESUMO

We characterize the association between engagement in care and durable viral suppression among persons newly diagnosed with HIV infection. Persons newly diagnosed with HIV with unsuppressed viral loads when they initiated care at one of six HIV clinics in the US were observed for up to 24 months. We describe the percentage who achieved durable viral suppression and number of days to achieve durable viral suppression. These outcomes were examined by the proportion of scheduled primary care appointments kept and demographic variables. Overall, 62% of patients achieved durable viral suppression and it took 174 days for 50% of patients to reach the beginning of the event. As the proportion of kept medical appointments increased, the proportion who achieved durable viral suppression increased, with 84% of patients who kept >75% of their appointments achieving the outcome. Higher adherence to appointments shortened the time to the beginning of durable viral suppression. Age, race/ethnicity, and risk factor for acquiring HIV infection were correlated with the outcomes. Adherence to primary care appointments is strongly associated with achieving durable viral suppression in persons newly diagnosed with HIV. Identifying and addressing patient barriers and unmet needs may increase the number who achieve durable viral suppression.


Assuntos
Infecções por HIV , Etnicidade , Infecções por HIV/diagnóstico , Infecções por HIV/tratamento farmacológico , Humanos , Carga Viral
7.
Nanomedicine ; 40: 102490, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34748957

RESUMO

The basic aim of the study was to develop and evaluate the triple drug loaded cationic nano-vesicles (cNVs), where miltefosine was used as a replacement of surfactant (apart from its anti-leishmanial role), in addition to meglumine antimoniate (MAM) and imiquimod (Imq), as a combination therapy for the topical treatment of cutaneous leishmaniasis (CL). The optimized formulation was nano-sized (86.2 ±â€¯2.7 nm) with high entrapment efficiency (63.8 ±â€¯2.1% (MAM) and 81.4 ±â€¯2.3% (Imq)). In-vivo skin irritation assay showed reduced irritation potential and a decrease in the cytotoxicity of cNVs as compared to conventional NVs (having sodium deoxycholate as a surfactant). A synergistic interaction between drugs was observed against intracellular amastigotes, whereas the in-vivo antileishmanial study presented a significant reduction in the parasitic burden. The results suggested the potential of surfactant free, triple drug loaded cNVs as an efficient vehicle for the safe topical treatment of CL.


Assuntos
Antiprotozoários , Leishmania , Leishmaniose Cutânea , Administração Tópica , Antiprotozoários/farmacologia , Humanos , Leishmaniose Cutânea/tratamento farmacológico , Tensoativos
8.
MMWR Morb Mortal Wkly Rep ; 69(27): 887-892, 2020 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-32644986

RESUMO

Meat and poultry processing facilities face distinctive challenges in the control of infectious diseases, including coronavirus disease 2019 (COVID-19) (1). COVID-19 outbreaks among meat and poultry processing facility workers can rapidly affect large numbers of persons. Assessment of COVID-19 cases among workers in 115 meat and poultry processing facilities through April 27, 2020, documented 4,913 cases and 20 deaths reported by 19 states (1). This report provides updated aggregate data from states regarding the number of meat and poultry processing facilities affected by COVID-19, the number and demographic characteristics of affected workers, and the number of COVID-19-associated deaths among workers, as well as descriptions of interventions and prevention efforts at these facilities. Aggregate data on confirmed COVID-19 cases and deaths among workers identified and reported through May 31, 2020, were obtained from 239 affected facilities (those with a laboratory-confirmed COVID-19 case in one or more workers) in 23 states.* COVID-19 was confirmed in 16,233 workers, including 86 COVID-19-related deaths. Among 14 states reporting the total number of workers in affected meat and poultry processing facilities (112,616), COVID-19 was diagnosed in 9.1% of workers. Among 9,919 (61%) cases in 21 states with reported race/ethnicity, 87% occurred among racial and ethnic minority workers. Commonly reported interventions and prevention efforts at facilities included implementing worker temperature or symptom screening and COVID-19 education, mandating face coverings, adding hand hygiene stations, and adding physical barriers between workers. Targeted workplace interventions and prevention efforts that are appropriately tailored to the groups most affected by COVID-19 are critical to reducing both COVID-19-associated occupational risk and health disparities among vulnerable populations. Implementation of these interventions and prevention efforts† across meat and poultry processing facilities nationally could help protect workers in this critical infrastructure industry.


Assuntos
Infecções por Coronavirus/epidemiologia , Surtos de Doenças , Indústria de Processamento de Alimentos , Doenças Profissionais/epidemiologia , Pneumonia Viral/epidemiologia , Adulto , Animais , COVID-19 , Feminino , Humanos , Masculino , Carne , Pessoa de Meia-Idade , Pandemias , Aves Domésticas , Estados Unidos/epidemiologia
9.
Sensors (Basel) ; 20(6)2020 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-32235803

RESUMO

Passive sonar is widely used for target detection, identification and classification based on the target radiated acoustic signal. Under the influence of Doppler, generated by relative motion between the moving target and the sonar array, the received ship-radiated acoustic signals are non-stationary and time-varying, which has a negative effect on target detection and other fields. In order to reduce the influence of Doppler and improve the performance of target detection, a coherent integration method based on cross-power spectrum is proposed in this paper. It can be concluded that the frequency shift and phase change in the cross-power spectrum obtained by each pair of data segments can be corrected with the compensations of time scale (Doppler) factor and time delay. Moreover, the time scale factor and time delay can be estimated from the amplitude and phase of the original cross-power spectrum, respectively. Therefore, coherent integration can be implemented with the compensated cross-power spectra. Simulation and experimental data processing results show that the proposed method can provide sufficient processing gains and effectively extract the discrete spectra for the detection of moving targets.

10.
J Pak Med Assoc ; 70(8): 1404-1407, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32794495

RESUMO

OBJECTIVE: To determine the frequency of retinal re-detachment (reRD) following silicone oil removal (SOR) in patients who had undergone pars planavitrectomy for treatment of Proliferative vitreoretinopathy (PVR) detachment. METHODS: A total of fifty (50) patients with diagnosis of PVR in LRBT hospital Lahore were selected within a duration of 12 months from April-2018 to April-2019 for this prospective observational study. Patients of rhegmatogenous retinal detachment (RD) who underwent vitrectomy using temporary SO tamponade and had completely attached retina at the time of SOR, were included. SOR was done via 3 ports pars plana vitrectomy (PPV) using EVA DORC machine. In 20 patients, scleral buckling (SB) was also done alongwith vitrectomy procedure. After SOR all patients were followed up for 6 months to determine the frequency of retinal re-detachment. RESULTS: There was male pre-dominance with 30 (60%) of total proportion. There were 26 (52%) patients who had a grade C PVR (C1), 18 (32%) had grade B PVR. The retinal re detachment was found in 2 (4.0%) patients out of 50 patients. In comparison of retinal re-detachment, there was no case of retinal redetachment in patients with SB and re-detachment occurred in 2 (6.6%) out of 30 patients in whom SB was not done (p-value 0.51). CONCLUSIONS: The rate of retinal re-detachment after silicone oil removal (SOR) was 4.0%. Implantation of SB at the time of PPV is associated with lower risk of retinal re detachment after vitrectomy in patients of Proliferative vitreoretinopathy (PVR).


Assuntos
Descolamento Retiniano , Vitreorretinopatia Proliferativa , Humanos , Masculino , Descolamento Retiniano/epidemiologia , Descolamento Retiniano/cirurgia , Estudos Retrospectivos , Recurvamento da Esclera/efeitos adversos , Óleos de Silicone , Resultado do Tratamento , Acuidade Visual , Vitrectomia , Vitreorretinopatia Proliferativa/epidemiologia , Vitreorretinopatia Proliferativa/cirurgia
11.
Microb Pathog ; 119: 1-8, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29626656

RESUMO

Equine granulocytic anaplasmosis (EGA) is an important tick borne disease of equines that is caused by Anaplasma phagocytophilum (A. phagocytophilum). The etiological agent has veterinary as well as public health importance because of its zoonotic nature. A. phagocytophilum causes an acute illness in equines with loss of appetite, lethargy, hemorrhages and lameness. Clinically, EGA is diagnosed upon examination of morulae within neutrophils especially granulocytes in the blood. The best diagnostic tool for the detection of EGA is Polymerase chain reaction (PCR). Previous studies suggested that EGA is a self-limiting disease and tetracycline therapy is considered as a best treatment regimen. There is no comprehensive summary on the occurrence and distribution of the infection at global level. Therefore, we intended to provide a comprehensive summary on the prevalence and epidemiology of EGA in different areas of the world. It includes mapping the global distribution of EGA in different areas of the world to identify the endemic regions which may be a source of potential disease outbreak. For this purpose, the published data from 1990 to 2018 on EGA was reviewed and collected by electronic literature search of five databases including Google, Google Scholar, Science Direct, PubMed and Web of Science.


Assuntos
Anaplasma phagocytophilum/patogenicidade , Anaplasmose/epidemiologia , Granulócitos/microbiologia , Doenças dos Cavalos/epidemiologia , Doenças Transmitidas por Carrapatos/epidemiologia , Doenças Transmitidas por Carrapatos/veterinária , Anaplasmose/tratamento farmacológico , Anaplasmose/microbiologia , Anaplasmose/transmissão , Animais , Antibacterianos/uso terapêutico , Bases de Dados Factuais , Surtos de Doenças , Transmissão de Doença Infecciosa , Doenças dos Cavalos/tratamento farmacológico , Doenças dos Cavalos/microbiologia , Doenças dos Cavalos/transmissão , Cavalos , Prevalência , Tetraciclina/uso terapêutico , Doenças Transmitidas por Carrapatos/tratamento farmacológico , Doenças Transmitidas por Carrapatos/transmissão , Carrapatos/microbiologia , Zoonoses/tratamento farmacológico , Zoonoses/epidemiologia , Zoonoses/microbiologia , Zoonoses/transmissão
12.
Am J Public Health ; 108(2): 175-181, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29267061

RESUMO

OBJECTIVES: To compare US trends in rates of injection drug use (IDU), specifically opioid injection, with national trends in the incidence of acute HCV infection to assess whether these events correlated over time. METHODS: We calculated the annual incidence rate and demographic and risk characteristics of reported cases of acute HCV infection using surveillance data from 2004 to 2014 and the annual percentage of admissions to substance use disorder treatment facilities reporting IDU for the same time period by type of drug injected and demographic characteristics. We then tested for trends. RESULTS: The annual incidence rate of acute HCV infection increased more than 2-fold (from 0.3 to 0.7 cases/100 000) from 2004 to 2014, with significant increases among select demographic subgroups. Admissions for substance use disorder attributed to injection of heroin and prescription opioid analgesics increased significantly, with an almost 4-fold increase in prescription opioid analgesic injection. Significant increases in opioid injection mirrored those for reported cases of acute HCV infection among demographic subgroups. CONCLUSIONS: These findings strongly suggest that the national increase in acute HCV infection is related to the country's opioid epidemic and associated increases in IDU.


Assuntos
Analgésicos Opioides/efeitos adversos , Hepatite C/epidemiologia , Vigilância da População , Abuso de Substâncias por Via Intravenosa/epidemiologia , Heroína/efeitos adversos , Humanos , Drogas Ilícitas , Incidência , Medicamentos sob Prescrição , Estados Unidos/epidemiologia
13.
AIDS Care ; 30(9): 1128-1134, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29925249

RESUMO

In 2012, antiretroviral (ARV) treatment guidelines expanded indications and recommended antiretroviral treatment for all HIV-infected persons in the United States, regardless of CD4 cell count. This analysis describes ARV prescriptions among commercially insured HIV-infected adults from 2012 to 2014. We analyzed persons aged 18-64 years from 2012 to 2014 Truven Health MarketScan Commercial Claims and Encounters® database. We identified HIV-infected persons who had at least one inpatient or two outpatient medical claims and identified pharmacy claims using National Drug Codes. We calculated changes over time in ARV prescription and performed a multivariable regression analysis to examine differences in ARV prescriptions by age, sex, and geographic region. We identified 29,419 HIV-infected persons in 2012, 26,380 in 2013, and 25,414 in 2014. Overall percentage with ARV prescription increased by 7.3%. There was a 23% increase in ARV prescriptions among people new to care and a 6% increase among people already established in care. In 2014, more persons who were new to HIV care did not have an ARV prescription compared to persons established in HIV care (37.5% vs 19.3%, respectively; p < 0.001). The percentage of persons without an ARV prescription was highest for persons residing in the Northeast (30.8%) compared to those residing in the West (21.7%), North Central (15.9%) and South (16.5%) and was higher among women (26.2%) compared to men (19.5%) (p < 0.001). Uptake of ARV medication has increased since the guidelines expanded their indications in 2012. Despite improvements from 2012 to 2014, a significant proportion of HIV-infected adults with a commercial health insurance plan were not prescribed ARV medications. Insurance-based strategies could be a novel method to increase the percentage of HIV-infected adults who receive optimal care in the United States.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Infecções por HIV/tratamento farmacológico , Adolescente , Adulto , Idoso , Contagem de Linfócito CD4 , Bases de Dados Factuais , Prescrições de Medicamentos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estados Unidos , Adulto Jovem
14.
Hepatology ; 63(2): 388-97, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26251317

RESUMO

UNLABELLED: The number of persons with chronic hepatitis B virus (HBV) infection in the United States is affected by diminishing numbers of young persons who are susceptible because of universal infant vaccination since 1991, offset by numbers of HBV-infected persons migrating to the United States from endemic countries. The prevalence of HBV infection was determined by serological testing and analysis among noninstitutionalized persons age 6 years and older for: antibody to hepatitis B core antigen (anti-HBc), indicative of previous HBV infection; hepatitis B surface antigen (HBsAg), indicative of chronic (current) infection; and antibody to hepatitis B surface antigen (anti-HBs), indicative of immunity from vaccination. These prevalence estimates were analyzed in three periods of the National Health and Nutrition Examination Survey (NHANES): 1988-1994 (21,260 persons); 1999-2008 (29,828); and 2007-2012 (22,358). In 2011-2012, for the first time, non-Hispanic Asians were oversampled in NHANES. For the most recent period (2007-2012), 3.9% had anti-HBc, indicating approximately 10.8 (95% confidence interval [CI]: 9.4-12.2) million noninstitutionalized U.S. residents having ever been infected with HBV. The overall prevalence of chronic HBV infection has remained constant since 1999: 0.3% (95% CI: 0.2-0.4), and since 1999, prevalence of chronic HBV infection among non-Hispanic blacks has been 2- to 3-fold greater than the general population. An estimated 3.1% (1.8%-5.2%) of non-Hispanic Asians were chronically infected with HBV during 2011-2012, which reflects a 10-fold greater prevalence than the general population. Adjusted prevalence of vaccine-induced immunity increased 16% since 1999, and the number of persons (mainly young) with serological evidence of vaccine protection from HBV infection rose from 57.8 (95% CI: 55.4-60.1) million to 68.5 (95% CI: 65.4-71.2) million. CONCLUSION: Despite increasing immune protection in young persons vaccinated in infancy, an analysis of chronic hepatitis B prevalence in racial and ethnic populations indicates that during 2011-2012, there were 847,000 HBV infections (which included ~400,000 non-Hispanic Asians) in the noninstitutionalized U.S. POPULATION.


Assuntos
Hepatite B Crônica/epidemiologia , Adolescente , Adulto , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Prevalência , Fatores de Tempo , Estados Unidos/epidemiologia , Adulto Jovem
15.
J Acoust Soc Am ; 142(5): EL507, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-29195465

RESUMO

A function that closely resembles the two-point time-domain Green's function (TDGF) representing the time delays associated with multipath between the two sensors can be recovered by correlating the noise field measured by two sensors. Here, a technique for extracting the TDGF from ambient ocean noise using acoustic vector sensors is presented. Experimental results suggest that the averaging time to extract TDGF is greatly reduced if sound pressure sensors (hydrophones) are replaced by acoustic vector sensors. The direct arrival and bottom bounce arrival were extracted successfully with only 1 min of vertical velocity data, while the bottom bounce arrival was not extracted with even 10 min of sound pressure data.

16.
MMWR Morb Mortal Wkly Rep ; 65(3): 47-50, 2016 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-26821369

RESUMO

As many as 2.2 million persons in the United States are chronically infected with hepatitis B virus (HBV) (1), and approximately 15%-25% of persons with chronic HBV infection will die prematurely from cirrhosis or liver cancer (2). Since 2006, the overall U.S. incidence of acute HBV infection has remained stable; the rate in 2013 was 1.0 case per 100,000 persons (3). Hepatitis B vaccination is highly effective in preventing HBV infection and is recommended for all infants (beginning at birth), all adolescents, and adults at risk for HBV infection (e.g., persons who inject drugs, men who have sexual contact with men, persons infected with human immunodeficiency virus [HIV], and others). Hepatitis B vaccination coverage is low among adults: 2013 National Health Interview Survey data indicated that coverage with ≥3 doses of hepatitis B vaccine was 32.6% for adults aged 19-49 years (4). Injection drug use is a risk factor for both hepatitis C virus (HCV) and HBV. Among young adults in some rural U.S. communities, an increased incidence of HCV infection has been associated with a concurrent increase of injection drug use (5); and recent data indicate an increase of acute HCV infection in the Appalachian region associated with injection drug use (6). Using data from the National Notifiable Diseases Surveillance System (NNDSS) during 2006-2013, CDC assessed the incidence of acute HBV infection in three of the four Appalachian states (Kentucky, Tennessee, and West Virginia) included in the HCV infection study (6). Similar to the increase of HCV infections recently reported, an increase in incident cases of acute HBV infection in these three states has occurred among non-Hispanic whites (whites) aged 30-39 years who reported injection drug use as a common risk factor. Since 2009, cases of acute HBV infection have been reported from more non-urban than urban regions. Evidence-based services to prevent HBV infection are needed.


Assuntos
Hepatite B/epidemiologia , Vigilância da População , Doença Aguda , Adulto , Humanos , Incidência , Kentucky/epidemiologia , Fatores de Risco , Abuso de Substâncias por Via Intravenosa/epidemiologia , Tennessee/epidemiologia , West Virginia/epidemiologia , População Branca/estatística & dados numéricos
17.
Clin Infect Dis ; 61(4): 584-92, 2015 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-25904365

RESUMO

BACKGROUND: An estimated 20 000 new hepatitis B virus (HBV) infections occur each year in the United States. We describe the results of enhanced surveillance for acute hepatitis B at 7 federally funded sites over a 6-year period. METHODS: Health departments in Colorado, Connecticut, Minnesota, Oregon, Tennessee, 34 counties in New York state, and New York City were supported to conduct enhanced, population-based surveillance for acute HBV from 2006 through 2011. Demographic and risk factor data were collected on symptomatic cases using a standardized form. Serum samples from a subset of cases were also obtained for molecular analysis. RESULTS: In the 6-year period, 2220 acute hepatitis B cases were reported from the 7 sites. For all sites combined, the incidence rate of HBV infection declined by 19%, but in Tennessee incidence increased by 90%, mainly among persons of white race/ethnicity and those aged 40-49 years. Of all reported cases, 66.1% were male, 57.1% were white, 58.4% were aged 30-49 years, and 60.1% were born in the United States. The most common risk factor identified was any drug use, notably in Tennessee; healthcare exposure was also frequently reported. The most common genotype for all reported cases was HBV genotype A (82%). CONCLUSIONS: Despite an overall decline in HBV infection, attributable to successful vaccination programs, a rise in incident HBV infection related to drug use is an increasing concern in some localities.


Assuntos
Hepatite B/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Demografia , Monitoramento Epidemiológico , Etnicidade , Feminino , Genótipo , Vírus da Hepatite B/classificação , Vírus da Hepatite B/genética , Vírus da Hepatite B/isolamento & purificação , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Inquéritos e Questionários , Estados Unidos/epidemiologia , Adulto Jovem
18.
MMWR Morb Mortal Wkly Rep ; 64(17): 453-8, 2015 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-25950251

RESUMO

Hepatitis C virus (HCV) infection is the most common blood-borne infection in the United States, with approximately three million persons living with current infection. Percutaneous exposure to contaminated blood is the most efficient mode of transmission, and in the United States, injection drug use (IDU) is the primary risk factor for infection. State surveillance reports from the period 2006-2012 reveal a nationwide increase in reported cases of acute HCV infection, with the largest increases occurring east of the Mississippi River, particularly among states in central Appalachia. Demographic and behavioral data accompanying these reports show young persons (aged ≤30 years) from nonurban areas contributed to the majority of cases, with about 73% citing IDU as a principal risk factor. To better understand the increase in acute cases of HCV infection and its correlation to IDU, CDC examined surveillance data for acute case reports in conjunction with analyzing drug treatment admissions data from the Treatment Episode Data Set-Admissions (TEDS-A) among persons aged ≤30 years in four states (Kentucky, Tennessee, Virginia, and West Virginia) for the period 2006-2012. During this period, significant increases in cases of acute HCV infection were found among persons in both urban and nonurban areas, with a substantially higher incidence observed each year among persons residing in nonurban areas. During the same period, the proportion of treatment admissions for opioid dependency increased 21.1% in the four states, with a significant increase in the proportion of persons admitted who identified injecting as their main route of drug administration (an increase of 12.6%). Taken together, these increases indicate a geographic intersection among opioid abuse, drug injecting, and HCV infection in central Appalachia and underscore the need for integrated health services in substance abuse treatment settings to prevent HCV infection and ensure that those who are infected receive medical care.


Assuntos
Hepatite C/epidemiologia , Vigilância da População , Abuso de Substâncias por Via Intravenosa/epidemiologia , Adolescente , Adulto , Criança , Feminino , Humanos , Incidência , Kentucky/epidemiologia , Masculino , Tennessee/epidemiologia , Virginia/epidemiologia , West Virginia/epidemiologia , Adulto Jovem
19.
Clin Infect Dis ; 59(10): 1411-9, 2014 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-25114031

RESUMO

BACKGROUND: Reports of acute hepatitis C in young persons in the United States have increased. We examined data from national surveillance and supplemental case follow-up at selected jurisdictions to describe the US epidemiology of hepatitis C virus (HCV) infection among young persons (aged ≤30 years). METHODS: We examined trends in incidence of acute hepatitis C among young persons reported to the Centers for Disease Control and Prevention (CDC) during 2006-2012 by state, county, and urbanicity. Sociodemographic and behavioral characteristics of HCV-infected young persons newly reported from 2011 to 2012 were analyzed from case interviews and provider follow-up at 6 jurisdictions. RESULTS: From 2006 to 2012, reported incidence of acute hepatitis C increased significantly in young persons-13% annually in nonurban counties (P = .003) vs 5% annually in urban counties (P = .028). Thirty (88%) of 34 reporting states observed higher incidence in 2012 than 2006, most noticeably in nonurban counties east of the Mississippi River. Of 1202 newly reported HCV-infected young persons, 52% were female and 85% were white. In 635 interviews, 75% of respondents reported injection drug use. Of respondents reporting drug use, 75% had abused prescription opioids, with first use on average 2.0 years before heroin. CONCLUSIONS: These data indicate an emerging US epidemic of HCV infection among young nonurban persons of predominantly white race. Reported incidence was higher in 2012 than 2006 in at least 30 states, with largest increases in nonurban counties east of the Mississippi River. Prescription opioid abuse at an early age was commonly reported and should be a focus for medical and public health intervention.


Assuntos
Usuários de Drogas , Hepacivirus , Hepatite C/epidemiologia , Adolescente , Adulto , Fatores Etários , Criança , Pré-Escolar , Feminino , Seguimentos , Geografia Médica , Hepatite C/história , História do Século XXI , Humanos , Incidência , Lactente , Recém-Nascido , Masculino , Vigilância da População , Fatores de Risco , Estados Unidos/epidemiologia , Adulto Jovem
20.
Biotechnol Biotechnol Equip ; 28(5): 934-940, 2014 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-26019581

RESUMO

Structural transformation of ezetimibe was performed by fungi Beauvaria bassiana and Cunninghamella blakesleeana. The metabolites were identified by different spectroscopic techniques as (3R,4S)-1-(4-fluorophenyl)-3-((E)-3-(4-fluorophenyl) allyl)-4-(4-hydroxyphenyl) azetidin-2-one (2), (3R, 4S)-1-(4-fluorophenyl)-3-(3-(4fluorophenyl)-3-oxopropyl)-4-(4-hydroxyphenyl) azetidin-2-one (3), (3R,4S) 1-(4-fluorophenyl)-3-(3-(4-fluorophenyl) propyl)-4-(4-hydroxyphenyl) azetidin-2-one (4) and (2R,5S)-N, 5-bis (4-fluorophenyl)-5-hydroxy-2-(4-hydroxybenzyl) pentanamide (5). This study displays two important features of these fungi, viz., their ability to metabolize halogenated compounds, and their capacity to metabolize drugs that are targets of the UDP-Glucuronyl Transferase System, a phenomenon not commonly observed.

SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa