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an oral poliovirus vaccine trial in costa rica.early in the course of the 1959 nationwide oral poliovirus vaccination campaign in costa rica, a small, special and intensive study of oral vaccination was initiated there by the yale poliomyelitis study unit. the aims were to determine the effectiveness of vaccination, as measured by the rate of antibody conversions and antibody rises induced by the trivalent lederle oral vaccine when given in two doses to a population of young children living in a tropical environment; to determine the prevale ...196220604109
preliminary report on vaccination in croatia against poliomyelitis with type 1 (chat) and type 3 (w-fox) attenuated polioviruses of koprowski.the incidence of poliomyelitis in the people's republic of croatia has progressively increased since 1945, and in 1953 and 1960 there were serious epidemics. in order to protect the age-groups at greatest risk a mass vaccination campaign was carried out with koprowski live-virus vaccine in the early spring of 1961, covering the entire population aged 3 months to 20 years. altogether 1 339 244 persons were given type 1 (chat strain), and 1 287 909 received type 3 (w-fox). over 100 000 persons wer ...196320604139
clinical surveillance after feeding oral attenuated live polio vaccine.during widespread administration of oral poliomyelitis vaccine in the united states and canada, a number of neurological conditions occurring within 30 days of vaccine administration were reported. after careful investigation, 11 cases of paralytic poliomyelitis in the united states and four cases in canada have been accepted as being most probably vaccine-associated.the case of a 35-year-old man who developed paralytic poliomyelitis 17 days after taking oral vaccine is reported. type iii poliov ...196320327536
poliomyelitis in monkeys: decreased susceptibility after avoidance stress.eleven monkeys were subjected to avoidance stress for 24 hours followed immediately by intravenous inoculation with type i poliovirus. twelve control monkeys not so stressed were similarly inoculated. seven of 11 stressed animals survived the infection while only one of the controls lived and their average incubation period was significantly longer than the average for controls. the number of circulating lymphocytes decreased significantly in experimental animals during and immediately after exp ...196317799850
infectivity of histone-poliovirus ribonucleic acid preparations.ludwig, ernest h. (the pennsylvania state university, university park) and christine e. smull. infectivity of histone-poliovirus ribonucleic acid preparations. j. bacteriol. 85:1334-1338. 1963.-some properties of histone-poliovirus ribonucleic acid (rna) preparations, as relate to infectivity for hela cell monolayers, were investigated. the histone-rna preparations were found to lose their infectivity rapidly at room temperature. they were considerably more stable at ice-bath temperature. diluti ...196314047226
[study of serological reactions during herpetic gingivostomatitis in children]. 196314111199
the stabilizing effect of l-cystine on the thermal inactivation of poliovirus. i. differentiation of the strains of poliovirus by heating with l-cystine. 196314130752
[haemophilus influenzae meningitis in a patient inoculated with vaccinia and triple vaccine]. 196314101097
[on the course of invasion of viral nucleic acids in tissue culture cells]. 196314101863
phosphatase activity in homogenates from normal and poliovirus infected tissue cultures. i. characterization of the normal activity. 196314101864
phosphatase activity in homogenates from normal and poliovirus infected tissue cultures. ii. variations induced by infection and bicarbonate poisoning. 196314101865
[cells and viruses 1961. a synthesis of the research activity of the cell and virus unit of the microbiological laboratories of the istituto superiore di sanit'a]. 196314116065
the antiviral effect of guanidine and its derivatives: iii. the development of guanidine resistant and guanidine dependent polio virus in tissue culture. 196314112340
[isolation of the enterovirus]. 196314118332
antiviral activity of selected benzimidazoles. 196314120785
investigations in vitro on the influence of some amoebae on survival of virus poliomyelitis. 196314120910
[peculiarities in virus excretion and antibody formation after administration of a "balanced" live vaccine mixture of poliovirus types i and ii]. 196314123271
[direct and cross neutralization tests in vitro of teschen and poliomyelitis viruses by the respective gamma globulins]. 196314125708
[inhibiting activity in vitro of pyrimidino-guanidine derivatives on poliomyelitis virus]. 196314122319
effect of x-irradiation on the response of animal cells to virus. 196314157339
structure of animal virus particles. 196314157341
[isolation and identification of virus by means of tissue culture]. 196314122036
[oral poliomyelitis virus vaccination (type ii) and tuberculosis]. 196314111917
the role of enteropathogenic bacteria and viruses in acute diarrhoeal disorders of infancy and childhood in johannesburg. ii. 'non-specific' gastro-enteritis. 196314130267
[studies on the tolerance and efficacy of live poliomyelitis virus vaccine type i]. 196314163000
the development of a continuous cell line from normal dog liver and its susceptibility to viruses. lf-10. 196314163348
marker test of poliovirus in relation to mass vaccination with live oral vaccines. 196314147706
characteristics of attenuated type 3 poliovirus obtained by alternate passages in chick cell cultures and monkey kidney cell cultures. 196314147715
[comparative studies of the susceptibility of some cell lines to various human and animal viruses. ii. the study of cell strains es (mouse embryo), p 1 eu (human embryo lung) and r 1 eu (human embryo kidney)]. 196314129982
the ineffectiveness of organic iodine (wescodyne) as a viral disinfectant. 196314071355
recent developments in biological products. ii. 196314071361
effect of polyanions on the multiplication of two variants of poliovirus. 196314040738
actions of metal chelates of substituted 1,10-phenanthrolines on viruses and cells. i. inactivation of viruses. 196314074102
effect of polyanions on the multiplication of two variants of poliovirus. 196314040963
[use of methods based on interference between tick-borne encephalitis and poliomyelitis viruses in human embryo tissue culture for serological surveys in human subjects]. 196314071272
[methods and results of preparation of live poliomyelitis vaccine, not containing mixtures of vacuolizing virus (ob40-sv40)]. 196314071282
antiviral and antibacterial activity of thymus extracts. 196314101224
[detection of antibodies to monkey virus (ob40) in human sera. serological evidence of infection from monkeys and kidney cultures]. 196314071285
adsorption in vitro of bovine enteroviruses by non-cultured bovine and human tissues. 196314072065
viral inhibition in the metaphase-arrest cell. 196314096191
poliovirus vaccines in mineral oil adjuvant. i. animal toxicity and serologic response data. 196314066383
thermosensitivity of poliovirus.wallis, craig (baylor university college of medicine, houston, tex.) and joseph l. melnick. thermosensitivity of poliovirus. j. bacteriol. 86:499-504. 1963.-polioviruses are thermosensitive agents, although thermoresistant strains have been obtained and reported in the literature. such resistant strains can be developed by exposure of the virus to cystine during multiple-cycle yields. thermoresistant strains can be converted to the thermosensitive state by passing the virus in cells maintained i ...196314066428
cytopathic enteroviruses isolated from sporadic cases of febrile illnesses in children with neurological involvement. 196314069806
interference between polioviruses and the effect of ultra-violet light. 196314098467
antiviral activity of tenuazonic acid. 196314098497
association of newly formed viral protein with specific polyribosomes. 196314077498
specific viral interference in hela cell cultures chronically infected with coxsackie b5 virus.crowell, richard l. (hahnemann medical college, philadelphia, pa.). specific viral interference in hela cell cultures chronically infected with coxsackie b5 virus. j. bacteriol. 86:517-526. 1963.-the presence of large amounts of coxsackie b5 virus in culture fluids of a hela subline, serially propagated over a 3-year period, provided evidence for attainment of a viral carrier state. human serum in the growth medium of carrier cultures appeared prerequisite for maintenance of a stable virus-cell ...196314066431
entero-viruses isolated from c.s.f. and blood. 196314067828
aspects of the growth of poliovirus as revealed by the photodynamic effects of neutral red and acridine orange. 196314070166
reaction of poliovirus and formaldehyde in magnesium chloride solution to enhance potency of killed-virus vaccine. 196314051877
isolation of enteric viruses in ontario during 1960-1962.during the past three years at the central laboratory, ontario department of health, 681 isolations were made in tissue culture from 6822 specimens submitted for virus studies by physicians and hospitals from all over ontario. nearly 74% of the isolates were enteroviruses, approximately 5% adenoviruses and about 1% reoviruses. the remaining 20% are still to be identified.although the bulk of isolations was made during the same three-month period (august, september and october) of each year, the ...196314052975
[virological problems presented by the control and surveillance of the application of antipoliomyelitic vaccination with live virus]. 196314078833
reversible inhibition of poliovirus ribonucleic acid. 196314078838
synthesis of poliovirus from viral rna in a disrupted cell system. 196314079289
isolation of viruses from children with acute leukemia. 196314054737
[profitable use of primary human amnion cell cultures in routine virological studies]. 196314054757
specific inhibition of replication of animal viruses. 196314057349
the agar cell culture precipitation test: its application to the study of vaccinia virus, adenoviruses and herpes simplex virus. 196314061371
vaccine potentiation by emulsification with pure hydrocarbon compounds. 196314061377
the use of a modified wecker technique for serodifferentiation of type 1 polioviruses related and unrelated to sabin's vaccine strain. ii. antigenic segregation of isolates from specimens collected in field studies. 196314063724
[on the technic of isolating enteroviruses from the soil]. 196314083299
attenuated poliovirus infection in infants fed colostrum from poliomyelitis immune cows. 196314084325
the virus diagnostic laboratory: functions and problems based on three years' experience. 196314064717
immunological characterization of vilyuisk human encephalomyelitis virus. 196314087883
[tissue culture tests of the antiviral properties of actinomycetes isolated from the soil in the ukraine]. 196314090362
epidemiology of poliomyelitis and allied diseases--1963. 196314064722
[current concepts of the role of enteroviruses in the pathogenesis of neuroinfections]. 196314090831
concerning the reproducibility of results of poliovirus titrations by the plaque method. 196314062333
[studies on injections of weak live poliovirus vaccine into children. 1. results in isolation of the virus from the feces of infants admitted to the children's hospital]. 196314093739
[studies on injections of weak live poliovirus vaccine into children. 2. results in isolation of the virus from the feces in the inoculated infants of families in mountain villages]. 196314093740
[studies on injections of weak live poliovirus vaccine into children. 3. results of quantitative culture of virus from feces of children given live vaccine]. 196314093741
interference between poliovirus ribonucleic acids. 196314093845
polyribosomes: size in normal and polio- infected hela cells.hela cells normally contain a distribution of polysome sizes, and the largest polysomes contain over 40 ribosomes. after infection with polio virus and actinomycin-d treatment, a new class of polio-induced polysomes are found, some of which contain up to 60 ribosomes. examinaton of these polysomes suggests a mechanism for protein synthesis with this polycistronic rna.196314075695
visualization of poliovirus type iii in paraffin sections of monkey spinal cord by indirect immuno-fluorescence. 196314076759
[research "in vitro" on the antipoliomyelitic activity of guanidine and on its capacity to indure a guanidine-dependence of the virus]. 196314079388
the effect of concentrated urea solutions on poliovirus strains adapted to different growth temperatures. 196314081356
photodynamic inactivation of poliovirus. 196314081357
[immunological changes in the blood of children inoculated with anti-poliomyelitis live-virus vaccine according to several immunization schedules]. 196314105830
[studies on tests for the non-toxicity of inactivated poliomyelitis vaccines. 1. influence of magnesium chloride on the susceptibility of monkey kidney cell cultures to formalin-treated poliomyelitis virus]. 196314105973
[on the presence of factors inhibiting (neutralizing) poliomyelitis virus in amniotic fluid, colostrum, milk and the infantile intestine and their behavior in relation to circulating antibodies]. 196314106535
[comparative study of the pathogenicity of infectious rna and native poliomyelitis virus for monkeys and mice]. 196314107033
a study of the mutation rates of several poliovirus strains to the reproductive capacity temperature/40+ and guanidine marker characteristics. 196314081361
"cyclopin": a trypsin sensitive consituent of penicillium cyclopium with antiviral properties. 196314076873
[study in tissue culture of the enteroviruses isolated in valencia during 1959, 1960 and 1961]. 196314086916
[enteroviruses and their clinical aspects]. 196314090706
the typing of enteroviruses in tissue culture by neutralization with composite antiserum pools. 196314103547
a comparative study of susceptibility of primary monkey kidney cells, hep 2 cells and hela cells to a variety of faecal viruses. 196314103548
[induction of poliomyelitis virus mutations by means of the direct action of proflavine on viral rna]. 196314082494
[virological and karyological study of a cell line resistant to poliomyelitis virus]. 196314082502
symposium on relationship of structure of microorganisms to their immunological properties. v. relationship of animal virus structures to their immunological properties as determined by electron microscopy. 196314097347
demonstration of poliovirus in isolated leucocytes, blood and c.s.f. smears of infected monkey by immunofluorescence and biological means. (brief report). 196314099580
[studies on poliomyelitis carried out at the instituto nacional de virologia of the s.s.a. (1959-1962)]. 196314110545
[experiences with immune fluorescence studies performed with fluorescein-isothiocyanate]. 196314092927
specific virus-neutralizing activity of sera from chicks immunized with polioviruses. 196314098065
a sensitive method for interferon assay. 196314115259
2-(alpha-hydroxybenzyl)-benzimidazolium salts and their influence on cultured cells infected with poliovirus. 196314098441
contribution to the knowledge of enteropathies of viral origin. studies and remarks on three outbreaks by enteroviruses (poliovirus and echo virus). 196314099581
altered location of protein synthesis in the cell after poliovirus infection. 196314099628
[immunologic response to the oral administration of trivalent vaccine (sabin)]. 196314119839
[studies with a new method of determination of virus suspension values]. 196314119888
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