Publications by authors named "David Yost"

The current tuberculosis (TB) case reporting system for the United States, the Report of Verified Case of TB (RVCT), has minimal capture of multidrug-resistant (MDR) TB treatment and adverse events. Data were abstracted in five states using the form for 13 MDR TB patients during 2012-2015. The Centers for Disease Control and Prevention Guidelines for Evaluating Public Health Surveillance Systems were used to evaluate attributes of the form.

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The World Health Organization recognizes Puerto Rico as an area of low tuberculosis (TB) incidence, where TB elimination is possible by 2035. To describe the current low incidence of reported cases, provide key lessons learned, and detect areas that may affect progress, we systematically reviewed the literature about the history of TB surveillance and control in Puerto Rico and supplemented this information with additional references and epidemiologic data. We reviewed 3 periods: 1898-1946 (public health efforts before the advent of TB chemotherapy); 1947-1992 (control and surveillance after the introduction of TB chemotherapy); and 1993-2015 (expanded TB control and surveillance).

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Objectives: In our previous work, providing medications in-hand at discharge was a key strategy to reduce asthma reutilization (readmissions and emergency revisits) among children in a large, urban county. We sought to spread this work to our satellite hospital in an adjacent county. A key initial barrier was the lack of an outpatient pharmacy on site, so we sought to determine if a partnership with community pharmacies could improve the percentage of patients with medications in-hand at discharge, thus decreasing reutilization.

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Background: Rocky Mountain spotted fever (RMSF) has emerged as a significant cause of morbidity and mortality since 2002 on tribal lands in Arizona. The explosive nature of this outbreak and the recognition of an unexpected tick vector, Rhipicephalus sanguineus, prompted an investigation to characterize RMSF in this unique setting and compare RMSF cases to similar illnesses.

Methods: We compared medical records of 205 patients with RMSF and 175 with non-RMSF illnesses that prompted RMSF testing during 2002-2011 from 2 Indian reservations in Arizona.

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Background: Rocky Mountain spotted fever (RMSF) is a disease that now causes significant morbidity and mortality on several American Indian reservations in Arizona. Although the disease is treatable, reported RMSF case fatality rates from this region are high (7%) compared to the rest of the nation (<1%), suggesting a need to identify clinical points for intervention.

Methods: The first 205 cases from this region were reviewed and fatal RMSF cases were compared to nonfatal cases to determine clinical risk factors for fatal outcome.

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Article Synopsis
  • On September 30, 2014, the first Ebola case in the U.S. was reported in Dallas after a patient traveled from Liberia during an outbreak in West Africa.
  • Two nurses who cared for the patient later contracted Ebola, with one traveling to Ohio while potentially infectious.
  • The CDC, along with local health authorities, took steps to track contacts of the infected nurses and provide guidelines for handling similar situations in the future.
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Objective: Streptococcus pneumoniae (S. pneumoniae) causes significant mortality throughout the United States and greater mortality among American Indian/Alaska Natives. Vaccination reduces S.

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The clinical assessment of an acutely intoxicated patient should be performed with meticulous care and include repetitive examinations to properly determine the patient's condition. Multiple factors, such as trauma and concomitant use of other drugs, can confuse the diagnostic picture and affect the choice of therapy. In this article, Dr Yost reviews the diagnostic considerations, appropriate treatment, and clinic discharge for the intoxicated patient.

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Background: Rates of cardiovascular disease and its risk factors seem to be increasing in American Indian populations, yet these changes have received little documentation.

Objectives: To evaluate incidence rates of coronary artery disease, acute myocardial infarction, and cardiac events during a 10-year period (1987-1996); to assess cardiac risk factors for an American Indian tribe in Arizona.

Methods: A retrospective medical chart review was performed for tribal members from January 1, 1987-December 31, 1996.

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