scholarly journals Bluetongue disease and seroprevalence in South American camelids from the northwestern region of the United States

2015 ◽  
Vol 27 (2) ◽  
pp. 226-230 ◽  
Author(s):  
Andrew J. Allen ◽  
James B. Stanton ◽  
James F. Evermann ◽  
Lindsay M. Fry ◽  
Melissa G. Ackerman ◽  
...  
Author(s):  
Andrés Malamud ◽  
Júlio C. Rodriguez

From November 1902 through February 1912, four presidents governed Brazil. Throughout all this period, though, only one person headed the foreign ministry: José Maria da Silva Paranhos Jr., alias Baron of Rio Branco (20 April 1845–10 February 1912). This political wonder and diplomatic giant was to shape Brazil’s international doctrine and diplomatic traditions for the following century. His major achievement was to peacefully solve all of Brazil’s border disputes with its South American neighbors. Founded in 1945, Brazil’s prestigious diplomatic school carries his name, Instituto Rio Branco, and, since the early 2000s, Brazilian foreign policy has become the largest subfield of international relations in university departments across the country. Indeed, Brazilian foreign policy is to Brazilian academia what American politics is to US academia, namely, a singular phenomenon that has taken over a general field. In contrast with the United States, most in-depth research from about 1998 to 2010 came from foreign-based scholars; however, since then a large cadre of mostly young academics in Brazil have seized the agenda. Unlike the pre-2000 period, the orientation has been toward public policy rather than diplomatic history. That the top Brazilian journals of international relations are now published in English rather than Portuguese attests to the increasing internationalization of the field.


Author(s):  
P.V. Shymaniuk ◽  
◽  
V.O. Miroshnyk ◽  

A comparative analysis of clustering methods was performed to identify gaps and anomalous values in the data. Data from the northwestern region of the United States were used for evaluation. According to the analysis results, it was found that the use of the DBSCAN method leads to a much smaller number of false positives. An algorithm for two-stage data validation using clustering and time series decomposition methods is proposed. Ref.9, fig. 3, tables 3.


Author(s):  
Álvaro A Faccini-Martínez ◽  
Thiago F Martins ◽  
Iara Silveira ◽  
Marcelo B Labruna

Abstract Only one previous record of an exotic tick on a Brazilian traveler has been reported. Here, we report the detection of Dermacentor andersoni (Stiles) in Brazil while attached to a human traveler returning from the United States. This report is the fifth record of D. andersoni as an exotic tick, and the second record of an exotic tick on a South American traveler.


1969 ◽  
Vol 43 (2) ◽  
pp. 192-203
Author(s):  
Theodore M. Berson

Prepared for the Brazilian Ambassador to the United States, this document is a review of all foreign investment in that South American nation in 1935. However, as Mr. Berson points out in his introduction, omissions are just as important as inclusions, especially in light of the trade and commerce treaty then being negotiated between the two countries.


2011 ◽  
Vol 18 (12) ◽  
pp. 2143-2147 ◽  
Author(s):  
Konstantin P. Lyashchenko ◽  
Rena Greenwald ◽  
Javan Esfandiari ◽  
Shelley Rhodes ◽  
Gillian Dean ◽  
...  

ABSTRACTTuberculosis (TB) in South American camelids (SAC) is caused byMycobacterium bovisorMycobacterium microti. Two serological methods, rapid testing (RT) and the dual-path platform (DPP) assay, were evaluated using naturally infected SAC. The study population included 156 alpacas and 175 llamas in Great Britain, Switzerland, and the United States. TB due toM. bovis(n= 44) orM. microti(n= 8) in 35 alpacas and 17 llamas was diagnosed by gross pathology examination and culture. Control animals were from herds with no TB history. The RT and the DPP assay showed sensitivities of 71% and 74%, respectively, for alpacas, while the sensitivity for llamas was 77% for both assays. The specificity of the DPP assay (98%) was higher than that of RT (94%) for llamas; the specificities of the two assays were identical (98%) for alpacas. When the two antibody tests were combined, the parallel-testing interpretation (applied when either assay produced a positive result) enhanced the sensitivities of antibody detection to 89% for alpacas and 88% for llamas but at the cost of lower specificities (97% and 93%, respectively), whereas the serial-testing interpretation (applied when both assays produced a positive result) maximized the specificity to 100% for both SAC species, although the sensitivities were 57% for alpacas and 65% for llamas. Over 95% of the animals with evidence of TB failed to produce skin test reactions, thus confirming concerns about the validity of this method for testing SAC. The findings suggest that serological assays may offer a more accurate and practical alternative for antemortem detection of camelid TB.


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