| arbovirus investigations in argentina, 1977-1980. ii. arthropod collections and virus isolations from argentine mosquitoes. | prospective surveys for arboviruses were carried out in santa fe, corrientes, and chaco provinces, argentina, aperiodically during 1977-1980. a total of 313,233 mosquitoes and 598 biting flies other than mosquitoes were collected and tested for virus in 5,197 and 45 pools, respectively. forty virus strains were isolated, all from mosquitoes, as follows: santa fe province: 4 gamboa group viruses from aedeomyia squamipennis, 1 strain each of st. louis encephalitis virus from culex pipiens quinquef ... | 1985 | 2863989 |
| [new findings on junin virus infection in rodents inside and outside the endemic area of hemorrhagic fever in argentina]. | in conjunction with field trials for a vaccine against argentine hemorrhagic fever (ahf), small mammals were trapped during a 28-month period (1 november 1987 to 13 march 1990) in 3 epidemiologically defined areas of the central argentine pampas: northern and central buenos aires provinces were included in the ahf "historic" area, where the disease was common 15-20 years ago, but case rates are currently low; southern santa fe province is the current high-incidence area for ahf; the nonendemic a ... | 1991 | 7476104 |
| [present status of zoonotic hemorrhagic fevers of south america]. | since 1958, the geographical distribution of argentine hemorrhagic fever (ahf) has especially extended non only into the province of buenos aires but also towards the provinces of santa fe and cordoba, leading to an estimated population at risk of about 1.2 m inhabitants. recent epidemiological field studies has confirmed the major role of calomys musculinus and c. laucha rodents in both transmission to man and conservation of junin virus in nature. however, the human infection may result essent ... | 1993 | 7819800 |
| prevalence of lymphocytic choriomeningitis virus infection in a human population of argentina. | the activity of lymphocytic choriomeningitis virus (lcmv) in the endemic area of argentine hemorrhagic fever has been previously reported and represents the first evidence of the coexistence of two arenaviruses pathogenic for humans, junin and lcmv, in the same geographic area. data are presented on the prevalence of lcmv human infection in a 10,000-km2 area located in santa fe province, argentina. study subjects were males, 15-65 years old, living and/or working in the rural area of 41 localiti ... | 1994 | 8147496 |
| a survey of the natural occurrence of aflatoxins and zearalenone in argentine field maize: 1983-1994. | a survey was carried out from 1983 to 1994 to determine the natural occurrence of aflatoxins and zearalenone in maize samples from buenos aires and santa fe provinces, argentina. among 2271 samples analysed, 1214 (53.5%) were contaminated with mycotoxins. aflatoxin b1 was identified in 445 samples (19.6%), aflatoxin b2 was identified in 92 samples (4.1%) and zearalenone was identified in 676 samples (29.8%). aflatoxin g1 was detected in only one sample and none of the samples contained detectabl ... | 1996 | 8647301 |
| cadmium and lead levels in cow's milk from a milking region in santa fe, argentine. | | 1998 | 9484571 |
| [isolation of lymphocytic choriomeningitis virus from human individuals]. | the activity of lymphocytic choriomeningitis virus (lcmv) in argentina has been previously reported on the basis of serological evidence in rodents and humans and the isolation of only one strain of lcmv from a mus domesticus captured in the province of córdoba. the aim of this paper was to register patients with serological diagnosis of lcm, to isolate and to identify human strains of lcmv in argentina. during the last 19 years, 15 cases were diagnosed as lcm by immunoflourescent indirect assay ... | 2001 | 11808424 |
| simulation model of within-herd transmission of bovine tuberculosis in argentine dairy herds. | transmission of bovine tuberculosis was quantified in three dairy herds located in south santa fe province, argentina. using estimates of mycobacterium bovis transmission (beta) and a reed-frost simulation model, the prevalence of tuberculosis infection in the study herds over time was investigated. the reed-frost model was modified by incorporating randomness in both beta and the incubation period (alpha) of m. bovis. the mean estimated herd beta was 2.2 infective contacts per year and did not ... | 2002 | 12163252 |
| use of spatial statistics and monitoring data to identify clustering of bovine tuberculosis in argentina. | the spatial distribution of endemic bovine tuberculosis (tb) in argentine cattle herds was described using recorded information on the detection of tb-like lesions in cattle slaughtered between march 1995 and 1997 at 126 slaughterhouses with federal inspection. approximately, 47% (9472396 cattle) of the estimated total number of cattle slaughtered in argentina during this period was included in the study. information on the number of cattle per source herd consigned to slaughter, number of cattl ... | 2002 | 12419600 |
| [pseudomonas fluorescens survival in soils with different contents of organic matter]. | pseudomonas fluorescens are plant growth promoting rhizobacteria (pgpr). the survival of this inoculated heterotrophic bacterium may be affected by soil organic matter content (som). to confirm this hypothesis, three strains of p. fluorescens: up61, c7r12 y p190 (native of balcarce, buenos aires) were inoculated, in laboratory conditions, into three argentine rhizospheric soils: two argiudolls (balcarce, and zavalla, santa fe) and a torrifluvens (cipolletti, río negro) with different som: 7.2; 4 ... | 2005 | 16178468 |
| [molecular study of argentine strains of bacillus anthracis]. | bacillus anthracis is one of the most monomorphic bacteria known and epidemiological studies of this microorganism have been hampered by the lack of molecular markers. for the genotyping of fourteen argentine field strains and the vaccine strain steme 34f2 the presence or absence of the virulence plasmids as well as vrra locus containing a variable-number tandem repeat (vntr) and presenting a polymorphism involving five variants, were analyzed. strains were isolated from cows, sheep and pigs dur ... | 2007 | 17702250 |
| delay in tuberculosis diagnosis and treatment in four provinces of argentina. | public health care services in the provinces of buenos aires, santa fe, jujuy and santa cruz, argentina. | 2008 | 18173879 |
| bovine brucellosis in argentina and bordering countries: update. | bovine brucellosis is a zoonotic disease spread worldwide. the infection in cattle is predominantly caused by brucella abortus and is usually detected in pregnant females through abortions. the disease is endemic in argentina; however, infection in humans is underestimated and often not reported. the prevalence of bovine brucellosis in countries bordering argentina is quite variable: 0.04% in uruguay, 10.20% in the north and 0.06% in the south of brazil, 0.2% in chile, 3.15% in paraguay and 2.27 ... | 2014 | 23046031 |
| [mycobacterium bovis in wildlife of the dairy regions of santa fe (argentina)]. | control eradication campaigns of bovine tuberculosis based on the «test and slaughter» approach were successful in many countries and regions; however, in some areas the infection persists and one of the main reasons is mycobacterium bovis infection in wild life species. argentina has applied the same approach since 1999, achieving progress in dairy cattle herds. nonetheless, the wildlife role has never been investigated. the objective of this study was to determine if wildlife from the santa fe ... | 2015 | 26376835 |
| selection and characterization of argentine isolates of trichoderma harzianum for effective biocontrol of septoria leaf blotch of wheat. | species of the genus trichoderma are economically important as biocontrol agents, serving as a potential alternative to chemical control. the applicability of trichoderma isolates to different ecozones will depend on the behavior of the strains selected from each zone. the present study was undertaken to isolate biocontrol populations of trichoderma spp. from the argentine wheat regions and to select and characterize the best strains of trichoderma harzianum by means of molecular techniques. a t ... | 2016 | 26873560 |
| [quali-quantitative study of the social variables defining transmission scenarios of argentine hemorrhagic fever in the provinces of buenos aires and santa fe, 2001-2010]. | the aim of this paper was to characterize transmission scenarios of argentine hemorrhagic fever in the post-vaccination period (2001-2010). the study was made up of three phases. the first consisted of a quantitative analysis using the database of the dr. julio i. maiztegui national institute of human viral diseases [instituto nacional de enfermedades virales humanas] regarding the confirmed cases in the period of study (221 cases). taking into account the transmission site and the known endemic ... | 2014 | 25237798 |
| [prevalence of htlv-i/ii infection among blood donors in santa fe province, argentina]. | subsequent to the national epidemiologic surveillance program developed in 1997 by the national aids program, anti-htlv-i/ii antibodies among blood donors in santa fe province started to be detected. on the basis of this initial finding, it was regarded of interest to evaluate the true htlv-i/ii seroprevalence in this population during a four-year survey. thus, from 1997 up to 2002, 9425 samples were studied from 17 out of the 19 provincial departments. out of the total sampling, 38 proved react ... | 2004 | 15628298 |
| genetic data on nine strs (csf1po, tpox, tho1, f13ao1, fesfps, vwa, d16s539, d7s820 and d13s317) and two vntrs (d1s80 and d17s5) in rosario population, santa fe argentine. | allele frequencies for nine short tandem repeats (strs) loci (csf1po, tpox, tho1, f13ao1, fes/fps, vwa, d16s539, d7s820 and d13s317) and two variable number tandem repeats (vntrs) were obtained from a sample of 270 unrelated individuals born in the rosario city, santa fe province of argentina. | 2004 | 15062960 |
| organochlorine pesticides in argentinian butter. | organochlorine pesticide residues were analysed in 150 samples of butter collected from several places in the cities of santa fe and rosario (argentine republic) over a period of 18 months. pesticides analysed in butter were: hch (alpha and gamma isomers), heptachlor and its epoxide, aldrin, dieldrin, and ddt (p,p' dde, o,p' ddt and p,p' ddt). most samples contained residues of gamma-hch (lindane) and heptachlor (92% and 78%, respectively); alpha-hch and aldrin were detected in 58% and 55% of sa ... | 1994 | 8209232 |