Is Leucocytozoon anatis the Cause of a New Disease in Ducks?

Parasitology ◽  
1915 ◽  
Vol 8 (1) ◽  
pp. 17-21 ◽  
Author(s):  
A. B. Wickware

During the past summer numerous inquiries were received by Professor Elford, Dominion Poultry Husbandman, Experimental Farm, Ottawa, with regard to an apparently infectious disease appearing among ducks. So frequent and insistent were the appeals for aid in this connection that the co-operation of the Health of Animals Branch was requested. This resulted in an investigation being undertaken to ascertain the clinical nature of the disease; to demonstrate, if possible, the cause; and also institute measures for its prevention.

1898 ◽  
Vol 62 (379-387) ◽  
pp. 250-266 ◽  

In several previous communications we have described the investigations made by us on the dielectric constants of various frozen organic bodies and electrolytes at very low temperatures. In these researches we employed a method for the measurement of the dielectric constant which consisted in charging and discharging a condenser, having the given body as dielectric, through a galvanometer 120 times in a second by means of a tuning-fork interrupter. During the past summer we have repeated some of these determinations and used a different method of measurement and a rather higher frequency. In the experiments here described we have adopted Nernst’s method for the measurement of dielectric constants, using for this purpose the apparatus as arranged by Dr. Nernst which belongs to the Davy-Faraday Laboratory.


1867 ◽  
Vol 157 ◽  
pp. 139-153 ◽  
Keyword(s):  
The Past ◽  

In my Paper read February 22nd, 1866, the intention was expressed of continuing my experiments on rigidity with a modified form of apparatus. This intention was carried out during the past summer, and I have now to report the results. In the former experiments, the rod operated on was supported at both ends, and was bent or twisted by hanging a pair of equal weights so as to act symmetrically on both ends; and the amounts of flexure and torsion were measured by the movements of two images formed by reflection upon a screen.


1923 ◽  
Vol 13 (4) ◽  
pp. 453-455 ◽  
Author(s):  
James Waterston

During the past summer Mr. F. W. Urich, Government Entomologist, Trinidad, B.W.I., succeeded in rearing a number of small Chalcids from larvae of a thrips in the prepupal stage. The following description is based on part of this material.


2021 ◽  
Vol 41 (3) ◽  
Author(s):  
Thais Maria Moreira Valim ◽  
Barbara Marciano Marques ◽  
Raquel Lustosa

Over the past few months living and facing the COVID-19 pandemic, the fact that the virus and its spread are not democratic has already been proven: the most common profile among victims of the new disease are black, indigenous, and poor people. In addition, it is also racialized and people on the periphery have been experiencing the greatest economic and social impact of the pandemic. COVID-19, in this sense, seems to be consistent with other documented health crises, making its way along the wide avenues of inequality. In this article, we seek to describe how the paths of inequality traced by COVID-19 intersect with the paths of another epidemic, which is now almost invisible in the public eye: that of the Zika Virus. Based on field diaries from research carried out in Recife / PE between 2016 and 2020, we seek to show how families previously affected by Zika now face COVID-19, pointing to structural factors common to the two health crises that put the same people at greater risk of exposure.


1878 ◽  
Vol 10 (2) ◽  
pp. 37-38
Author(s):  
C. E. Worthington
Keyword(s):  
The Past ◽  

The occurrence of this species in considerable numbers in this vicinity has afforded an opportunity for comparison with A. aphrodite, the results of which are appended.It should be stated that although the number referred to is small, yet the unrecorded comparison of over two hundred examples of both species during the past summer has agreed fully with this. In the line before me are five females each of alcestis and aphrodite. In every case the general color of the upper surface is duller in aphrodite, the basal shading heavier and more extensive, and the black markings on primaries heavier; in two examples the color approaches that of A. cybele, while the examples of alcestis exhibit a uniform clear color with hardly any variation.


2000 ◽  
Vol 6 (S2) ◽  
pp. 642-643
Author(s):  
CD Humphrey

“Emergence” of infectious disease agents in humans, domestic animals and wildlife during the past 20 years has been widely described. Perception of emergence derives largely from the application of improved identification methods, including refinements in molecular, serologic, and microscopy technologies that enable researchers to monitor species migration with greater sensitivity. The reality of emergence comes from shifts in genetic profiles and from influences of ecological changes often brought about by human interventions designed for economic or quality-of-life gains, and ecologic management. CDC has frequent involvement with many outbreaks caused by various infectious disease agents, some of which may be considered emerging. Notable unusual agents include filoviruses (Fig. 1) and hantaviruses (Fig. 2). More typically encountered agents include caliciviruses (Fig. 3) and influenza viruses (Fig. 4). Recently, threats of national and international bioterrorism have added to CDC's responsibilities for prompt identification of infectious agents.


2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S348-S348
Author(s):  
Carlos S Saldana ◽  
Jeff Olender ◽  
Steven M Gordon ◽  
Katherine Holman

Abstract Background Studies show that 35% of patients obtaining care in a specialty clinic are self-referred, of these, 60% do not have a PCP. Frequent changing of physicians without provider referral contributes to high costs and healthcare inefficiencies. Many subspecialty clinics do not require provider referral for access, so-called: ‘self-referral’; becoming an issue when patients discern a need for a subspecialty that does not align with their disease process. The Infectious Disease (ID) Department of the Cleveland Clinic Main Campus began prescreening all self-referred patients in July 2016. (Figure 1) We reviewed this process after sustained implementation. Methods Retrospective cohort study examining “self-referred” patients (lacking an internal referral order) to the ID Clinic from December 2016–October 2018. Grouped patients by chief complaint using system-based categories, subsequently reviewed records received for prior workup and identified if they had been seen by a specialist or received antibiotics in the past 6 months prior to visit. Those seen in our department were evaluated for: (1) additional workup ordered (2) if antibiotics were prescribed, and (3) referral to another specialty. Results 1449 patients self-referred. By prescreening them, waiting time for appointment fell from >40 to 13 days, no-shows steadily drop from 11% to 8%. We audit 105 (40%) of patients seen, most common reasons for referral: Skin 19 (18%), Bone/Joint 18 (17%), Concern for Lyme Disease 16 (15%). 73% had been previously seen by a subspecialty; majority by ID. 75% received antibiotics in the past 6 months. After the visit, 53% had new work up ordered, 21% were prescribed antibiotics and 26% patients were referred to another specialty. Conclusion Prescreening self-referred patients contributed to improved access to subspecialty care and decreased”no-show’ appointments. The majority of self-referred patients had previous evaluation, frequently by the specialty being requested. Disclosures All authors: No reported disclosures.


2000 ◽  
Vol 11 (5) ◽  
pp. 237-248 ◽  
Author(s):  
Lionel A Mandell ◽  
Thomas J Marrie ◽  
Ronald F Grossman ◽  
Anthony W Chow ◽  
Robert H Hyland ◽  
...  

Community-acquired pneumonia (CAP) is a serious illness with a significant impact on individual patients and society as a whole. Over the past several years, there have been significant advances in the knowledge and understanding of the etiology of the disease, and an appreciation of problems such as mixed infections and increasing antimicrobial resistance. The development of additional fluoroquinolone agents with enhanced activity againstStreptococcus pneumoniaehas been important as well. It was decided that the time had come to update and modify the previous CAP guidelines, which were published in 1993. The current guidelines represent a joint effort by the Canadian Infectious Diseases Society and the Canadian Thoracic Society, and they address the etiology, diagnosis and initial management of CAP. The diagnostic section is based on the site of care, and the treatment section is organized according to whether one is dealing with outpatients, inpatients or nursing home patients.


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