Publications by authors named "Samuel J Crowe"

Meningococcal disease is a life-threatening invasive infection caused by Neisseria meningitidis. Two quadrivalent (serogroups A, C, W, and Y) meningococcal conjugate vaccines (MenACWY) (MenACWY-CRM [Menveo, GSK] and MenACWY-TT [MenQuadfi, Sanofi Pasteur]) and two serogroup B meningococcal vaccines (MenB) (MenB-4C [Bexsero, GSK] and MenB-FHbp [Trumenba, Pfizer Inc.]), are licensed and available in the United States and have been recommended by CDC's Advisory Committee on Immunization Practices (ACIP).

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Background: College students are at increased risk for invasive meningococcal disease, but which students are most at risk is unclear.

Methods: US meningococcal disease cases in persons aged 18-24 years during 2014-2017 were included. Patients were classified as undergraduate students or other persons.

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Article Synopsis
  • * A study using insurance claims data from 2016 to 2019 revealed that Medicaid enrollees had a higher incidence of meningococcal disease (0.12 cases per 100,000 person-years) compared to those with commercial insurance (0.06 cases per 100,000 person-years).
  • * Among Medicaid enrollees, the incidence was significantly higher for PEH at 3.17 cases per 100,000 person-years, suggesting the need to explore factors contributing to the disease's
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Three vaccines are routinely recommended for adolescents to prevent pertussis, meningococcal disease, and cancers caused by human papillomavirus (HPV). CDC analyzed data from the 2022 National Immunization Survey-Teen for 16,043 adolescents aged 13-17 years to assess vaccination coverage. Birth cohort analyses were conducted to assess trends in vaccination coverage by age 13 years (i.

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Novel outbreak-associated food vehicles (i.e., foods not implicated in past outbreaks) can emerge as a result of evolving pathogens and changing consumption trends.

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Article Synopsis
  • About 800 foodborne disease outbreaks occur annually in the U.S., with few linked to food recalls.
  • A study comparing 226 outbreak cases from 2006-2016 revealed that recall-associated outbreaks generally had more illnesses, hospitalizations, and fatalities than those not linked to recalls.
  • Salmonella was the leading cause of recall-associated outbreaks, primarily involving dairy, beef, and molluscs, while many recalls occurred after or during the outbreak, indicating a need for better identification and traceability to prevent illness.
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Campylobacter causes an estimated 1.3 million diarrheal illnesses in the United States annually (1). In August 2017, the Florida Department of Health notified CDC of six Campylobacter jejuni infections linked to company A, a national pet store chain based in Ohio.

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Problem/condition: Known foodborne disease agents are estimated to cause approximately 9.4 million illnesses each year in the United States. Although only a small subset of illnesses are associated with recognized outbreaks, data from outbreak investigations provide insight into the foods and pathogens that cause illnesses and the settings and conditions in which they occur.

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Background: From December 2014 to September 2016, a cholera outbreak in Kenya, the largest since 2010, caused 16,840 reported cases and 256 deaths. The outbreak affected 30 of Kenya's 47 counties and occurred shortly after the decentralization of many healthcare services to the county level. This mixed-methods study, conducted June-July 2015, assessed cholera preparedness in Homa Bay, Nairobi, and Mombasa counties and explored clinic- and community-based health care workers' (HCW) experiences during outbreak response.

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Article Synopsis
  • - In 2016, an outbreak of Shiga toxin-producing Escherichia coli (STEC) infections linked to contaminated flour led to an investigation that identified 56 cases across 24 states.
  • - The study showed a significant association between the outbreak and a specific brand of flour, as well as the consumption of unbaked dough, with high odds ratios indicating a strong link.
  • - Laboratory tests confirmed the presence of outbreak strains in flour samples, and whole-genome sequencing connected the clinical and food samples to a single flour production facility, highlighting the risk of raw flour as a source of foodborne illness.
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  • Investigating multistate foodborne outbreaks of Salmonella linked to chicken is difficult due to high consumption rates and numerous brands, but whole genome sequencing helps trace the genetic relationships of the pathogens involved.* -
  • In a 2014 outbreak of Salmonella Heidelberg infections, whole genome sequencing identified connections among clinical and food samples, revealing that specific isolates were closely related to those of infected individuals who attended a catered party.* -
  • The findings provided strong evidence that chicken from a major producer was the source of the outbreak, demonstrating the effectiveness of combining whole genome sequencing with epidemiological methods in tracking foodborne illnesses.*
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During the Ebola virus outbreak of 2013-2016, the Viral Special Pathogens Branch field laboratory in Sierra Leone tested approximately 26 000 specimens between August 2014 and October 2015. Analysis of the B2M endogenous control Ct values showed its utility in monitoring specimen quality, comparing results with different specimen types, and interpretation of results. For live patients, blood is the most sensitive specimen type and oral swabs have little diagnostic utility.

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In 2015, community event-based surveillance (CEBS) was implemented in Sierra Leone to assist with the detection of Ebola virus disease (EVD) cases. We assessed the sensitivity of CEBS for finding EVD cases during a 7-month period, and in a 6-week subanalysis, we assessed the timeliness of reporting cases with no known epidemiologic links at time of detection. Of the 12,126 CEBS reports, 287 (2%) met the suspected case definition, and 16 were confirmed positive.

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On January 6, 2015, a man aged 40 years was admitted to Kenyatta National Hospital in Nairobi, Kenya, with acute watery diarrhea. The patient was found to be infected with toxigenic Vibrio cholerae serogroup O1, serotype Inaba. A subsequent review of surveillance reports identified four patients in Nairobi County during the preceding month who met either of the Kenya Ministry of Health suspected cholera case definitions: 1) severe dehydration or death from acute watery diarrhea (more than four episodes in 12 hours) in a patient aged ≥5 years, or 2) acute watery diarrhea in a patient aged ≥2 years in an area where there was an outbreak of cholera.

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To determine whether 2 readily available indicators predicted survival among patients with Ebola virus disease in Sierra Leone, we evaluated information for 216 of the 227 patients in Bo District during a 4-month period. The indicators were time from symptom onset to healthcare facility admission and quantitative real-time reverse transcription PCR cycle threshold (Ct), a surrogate for viral load, in first Ebola virus-positive blood sample tested. Of these patients, 151 were alive when detected and had reported healthcare facility admission dates and Ct values available.

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Introduction: Millions of U.S. residents become ill from foodborne pathogens each year.

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As the gap between the need for and supply of human organs continues to widen, the aim of securing additional sources of these "gifts of the body" has become a seemingly overriding moral imperative, one that could-and some argue, should-override the widespread ban on organ markets. As a medical practice, organ transplantation entails the inherent risk that one human being, a donor, will become little more than a means to the end of healing for another human being and that he or she will come to have a purely instrumental value. With the establishment of organ markets, not only will the harms of instrumentalization be a reality-the ends of medicine will be further compromised and confused.

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