Feather Pb Isotopes Reflect Exposure History and ALAD Inhibition Shows Sub-clinical Toxicity in California Condors

2009 ◽  
Author(s):  
Kathryn Parmentier
Keyword(s):  
Pb Isotopes ◽  
Clinical Toxicity ◽  
Exposure History

Trauma Exposure History and Current Religiousness and Spirituality in College Students

2008 ◽  
Author(s):  
Crystal L. Park ◽  
Erica L. Swenson ◽  
Jennifer H. Wortmann ◽  
Emily Titrud ◽  
Carrie Gavitt ◽  
...  
Keyword(s):  
College Students ◽  
Trauma Exposure ◽  
Exposure History

scholarly journals Effects of heterogeneity in infection-exposure history and immunity on the dynamics of a protozoan parasite

2007 ◽  
Vol 4 (16) ◽  
pp. 841-849 ◽  
Author(s):  
Maite Severins ◽  
Don Klinkenberg ◽  
Hans Heesterbeek
Keyword(s):  
Dynamic Behaviour ◽  
Protozoan Parasite ◽  
Host Population ◽  
Infection Process ◽  
Control Measures ◽  
Complex Dynamic ◽  
Systems Models ◽  
Exposure History ◽  
The Relationship ◽  
Initial Contamination

Infection systems where traits of the host, such as acquired immunity, interact with the infection process can show complex dynamic behaviour with counter-intuitive results. In this study, we consider the traits ‘immune status’ and ‘exposure history’, and our aim is to assess the influence of acquired individual heterogeneity in these traits. We have built an individual-based model of Eimeria acervulina infections, a protozoan parasite with an environmental stage that causes coccidiosis in chickens. With the model, we simulate outbreaks of the disease under varying initial contaminations. Heterogeneity in the traits arises stochastically through differences in the dose and frequency of parasites that individuals pick up from the environment. We find that the relationship between the initial contamination and the severity of an outbreak has a non-monotonous ‘wave-like’ pattern. This pattern can be explained by an increased heterogeneity in the host population caused by the infection process at the most severe outbreaks. We conclude that when dealing with these types of infection systems, models that are used to develop or evaluate control measures cannot neglect acquired heterogeneity in the host population traits that interact with the infection process.

scholarly journals 451. Evaluation of Exposure History in Healthcare Personnel with Coronavirus 2019 Disease

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S293-S293
Author(s):  
Sandra Silva ◽  
Thriveen Mana ◽  
Davinder Bhullar ◽  
Beatrice Tabor ◽  
Curtis Donskey
Keyword(s):  
High Risk ◽  
Risk Exposure ◽  
Healthcare Personnel ◽  
Administrative Personnel ◽  
Asymptomatic Carriage ◽  
Moderate Disease ◽  
Control And Prevention ◽  
History Of ◽  
Exposure History ◽  
Atypical Presentations

Abstract Background During the Coronavirus Disease 2019 (COVID-19) pandemic, many healthcare personnel (HCP) have developed COVID-19. However, there is uncertainty regarding whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was acquired at work versus in the community. Methods We conducted a cohort study to examine exposure history of personnel with COVID-19 infection or asymptomatic carriage in a VA healthcare system. High-risk exposures were classified based Centers for Disease Control and Prevention criteria. Results Of 578 personnel tested, 49 (8%) had nasopharyngeal swabs with positive PCR results, including 45 (92%) with and 4 (8%) without COVID-19 symptoms. Of the 49 cases, 21 (43%) had a documented high-risk exposure at work, including 14 exposures to COVID-19 patients and 7 exposures to colonized or infected personnel. Exposures to infected patients most often were a result of delays in recognition of COVID-19 due to atypical presentations. Exposures to personnel with COVID-19 most often involved activities such as meals when facemasks were not worn. Most cases occurred among nurses (26, 53%) and administrative personnel (10, 20%); only 3 physicians developed COVID-19. No cases occurred in personnel working on COVID-19 wards. All personnel had mild or moderate disease. Conclusion Forty-three percent of healthcare personnel with COVID-19 had prior high-risk exposures at work. Improved detection of patients with atypical presentations and efforts to reduce high-risk contacts among personnel may reduce the risk for acquisition of SARS-CoV-2. Disclosures All Authors: No reported disclosures

scholarly journals Ocular and Systemic Manifestations in Paediatric Multisystem Inflammatory Syndrome Associated with COVID-19

2021 ◽  
Vol 10 (13) ◽  
pp. 2953
Author(s):  
Tzu-Chen Lo ◽  
Yu-Yen Chen
Keyword(s):  
Serum Antibody ◽  
Case Series ◽  
Pooled Analysis ◽  
Rt Pcr ◽  
Laboratory Findings ◽  
Systemic Manifestations ◽  
Polymerase Chain ◽  
Exposure History ◽  
Systemic Symptoms ◽  
Inflammatory Syndrome

This study aimed to achieve a better understanding of the epidemiological and clinical characteristics of multisystem inflammatory syndrome in children (MIS-C) following coronavirus disease 2019 (COVID-19). We searched PubMed and Embase between December 2019 and March 2021 and included only peer-reviewed clinical studies or case series. The proportions of patients who had conjunctivitis, systemic symptoms/signs (s/s), Kawasaki disease (KD), and exposure history to suspected/confirmed COVID-19 cases were obtained. Moreover, positive rates of the nasopharyngeal real-time reverse transcriptase polymerase chain reaction (RT-PCR) and serum antibody for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were recorded. Overall, 32 studies with 1458 patients were included in the pooled analysis. Around half of the patients had conjunctivitis. The five most common systemic manifestations were fever (96.4%), gastrointestinal s/s (76.7%), shock (61.5%), rash (57.1%), and neurological s/s (36.8%). Almost one-third presented complete KD and about half had exposure history to COVID-19 cases. The positivity of the serology (82.2%) was higher than that of the nasopharyngeal RT-PCR (37.0%). MIS-C associated with COVID-19 leads to several features similar to KD. Epidemiological and laboratory findings suggest that post-infective immune dysregulation may play a predominant role. Further studies are crucial to elucidate the underlying pathogenesis.

205Bi/206Bi cyclotron production from Pb-isotopes for absorption studies in humans

1993 ◽  
Vol 44 (12) ◽  
pp. 1467-1472
Author(s):  
R. Fischer ◽  
J. Wendel ◽  
B. Dresow ◽  
V. Bechtold ◽  
H.C. Heinrich
Keyword(s):  
Pb Isotopes ◽  
Cyclotron Production ◽  
Absorption Studies

Genesis and Hydrothermal Evolution of the Zhazigou Skarn W (Mo) Deposit, East Qinling, China: Constraints from Fluid Inclusions and H–O–S–Pb isotopes

2021 ◽  
pp. 104374
Author(s):  
Liwei Xue ◽  
Gongwen Wang ◽  
Li Tang ◽  
Yi Cao ◽  
Jingguo Du ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Pb Isotopes
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