| legionellosis. | | 1979 | 386497 |
| trichinosis in bears in northeastern united states. | | 1971 | 5104405 |
| diseases in cattle in contact with swine under feedlot conditions. ii. case studies on a glossitis-respiratory complex. | | 1967 | 5257334 |
| particulate sulfates in pittsburgh air. | | 1965 | 14265109 |
| 1974 cummings memorial lecture. the long road from donora. | | 1974 | 4417390 |
| porcine enteroviruses: a serologic comparison of thirty-eight pennsylvania isolates with other reported north american strains, teschen, talfan, and t80 serums--a progress report. | | 1967 | 4291852 |
| economic analysis of an epizootic of pseudorabies and subsequent production following the institution of a vaccination program in a pennsylvania swine herd. | the economic impact of pseudorabies was examined in a commercial swine herd. at the onset of clinical signs, a modified-live virus vaccine was administered to the sow herd and repeated at 3-month intervals. according to production data from the 320-sow farrow-to-feeder unit, preweaning mortality increased twofold, and subsequently, the number of pigs weaned per litter decreased by 19% (p less than 0.005) during the 5-week epizootic. also, the number of pigs born alive decreased by 6% during the ... | 1990 | 2166725 |
| seroprevalence of and risk factors for toxoplasma gondii in the us swine herd using sera collected during the national animal health monitoring survey (swine 2006). | the united states department of agriculture (usda) initiated the national animal health monitoring system (nahms) in 1983 to collect, analyse and disseminate data on animal health, management and productivity in us domestic livestock populations, including swine. the programme includes an on-farm serological sampling component which can be used to monitor seroprevalence of various pathogens, including toxoplasma gondii. the purpose of this study was to determine the seroprevalence of t. gondii i ... | 2010 | 19744304 |
| nutrition classics. the journal of biological chemistry, volume xcvii, 1932, pages 325-331. isolation and identification of vitamin c by w.a. waugh and c.g. king. | | 1976 | 768830 |
| you can't win them all. | | 1979 | 376878 |
| [legionnaires' disease, a previously unknown infectious disease of bacterial nature]. | | 1979 | 369246 |
| legionnaires' disease: isolation of a bacterium and demonstration of its role in other respiratory disease. | to identify the etiologic agent of legionnaire's disease, we examined patients' serum and tissue specimens in a search for toxins, bacteria, fungi, chlamydiae, rickettsiae and viruses. from the lungs of four of six patients we isolated a gram-negative, non-acid-fast bacillus in guinea pigs. the bacillus could be transferred to yolk sacs of embryonated eggs. classification of this organism is incomplete. we used yolk-sac cultures of the bacillus as antigen to survey suspected serum specimens, emp ... | 1977 | 335245 |
| the swine flu immunization program: scientific venture or political folly? | the author of this article, an internationally recognized coroner perhaps best known among laymen for his incisive and tenacious criticism of the warren commission report on the kennedy assassination, turns his attention to the federal government's 1976--1977 swine flu immunization program. dr. wecht contends that although this program may have been viewed by its key proponents as having great public health importance, or perhaps even political value, its creation and continuation nevertheless w ... | 1977 | 206136 |
| real-time multiplex pcr assay for rapid detection and toxintyping of clostridium perfringens toxin producing strains in feces of dairy cattle. | clostridium perfringens is an anaerobic, gram-positive, spore-forming bacterium associated with a wide variety of diseases in domestic animals and humans. we have developed dual-labeled fluorescence hybridization probe (taqman((r)))-based real-time multiplex pcr assay for detection of toxin genes alpha (cpa), beta (cpb), iota (ia), epsilon (etx), beta2 (cpb2) and enterotoxin (cpe) of c. perfringens directly from cattle feces. the assay was standardized using atcc reference strains of c. perfring ... | 2008 | 17890052 |
| efficacy of training in theriogenology as determined by a survey of veterinarians. | to determine whether veterinarians perceive that theriogenology training at veterinary medical schools in north america and the caribbean is adequate for achievement of theriogenology skills commonly used in private practice. | 2006 | 16910848 |
| the prevalence of microsporum nanum infection in swine. | | 1965 | 14291573 |
| microsporum nanum: first recorded isolation from animals in the united states. | the first cases in the united states of swine infections caused by the fungus microsporum nanum are reported. the infections occurred in a herd of yorkshire swine in pennsylvania. the dermatophyte, which readily produced experimental infections, was identified by isolation and studies in pure cultures. | 1964 | 14074853 |
| private investigations. | | 2001 | 11346758 |
| nutrient management practices among swine operations of various sizes. | to determine feeding, cropping, and manure-handling practices of swine operations of various sizes. | 2000 | 11128545 |
| spatial and temporal epidemiology of pseudorabies virus infection. | to examine the pattern of pseudorabies virus (prv) infection in pennsylvania and identify the area factors associated with herd quarantine status. | 1996 | 8915430 |
| isolation of pittsburgh pneumonia agent from nebulizers used in respiratory therapy. | | 1980 | 7436190 |
| porcine focal symmetrical poliomyelomalacia. | an acute afebrile paretic condition was diagnosed in 16 of 100 feeder pigs between eight to ten weeks of age. nine pigs died acutely and seven pigs were euthanized. macroscopic lesions in the ventral horns of the cervical, thoracic, lumbar and sacral segments of the spinal cord consisted of focal, bilateral, grey depressed areas. there was a bilateral symmetrical focal poliomyelomalacia histopathologically characterized by microcavitation, endothelial and glial cell proliferation and infiltratio ... | 1982 | 7093817 |
| incidence of listeriosis in pennsylvania livestock. | | 1967 | 5624198 |
| escherichia coli o149:k91, k88ac:h10 isolated from pigs with colibacillosis in the united states. | | 1971 | 4940148 |
| brucella suis infection associated with feral swine hunting - three states, 2007-2008. | historically, brucellosis from brucella suis infection occurred among workers in swine slaughterhouses. in 1972, the u.s. department of agriculture national brucellosis eradication program was expanded to cover swine herds. subsequent elimination of brucellosis in commercial swine resulted in a decrease in b. suis-associated illness in humans. currently, swine-associated brucellosis in humans in the united states is predominantly associated with exposure to infected feral swine (i.e., wild boar ... | 2009 | 19521334 |
| extended-spectrum and cmy-type beta-lactamase-producing escherichia coli in clinical samples and retail meat from pittsburgh, usa and seville, spain. | infections due to escherichia coli producing extended-spectrum beta-lactamase (esbl) or cmy-type beta-lactamase (cmy) are increasingly observed in non-hospitalized patients. the origin of these organisms is uncertain, but retail meat contaminated with e. coli may be a source. in the present study, clinical information and strains collected from patients infected or colonized with esbl-producing and cmy-producing e. coli at hospitals in pittsburgh, usa and seville, spain were investigated. retail ... | 2010 | 19681957 |
| antibiotic susceptibilities of salmonella species isolated at a large animal veterinary medical center: a three year study. | the antibiograms of 408 salmonella species isolated from large animals were collected during a three year study from 1981 through 1983. the predominant salmonella serogroup among these isolates was group b. a consistently high percentage of all isolates were resistant to ampicillin and tetracycline. a pattern of increasing resistance to chloramphenicol and gentamicin was documented for serogroup b isolates while the susceptibility of the isolates to neomycin increased. there was a decrease in th ... | 1985 | 4016577 |
| host range of a/chicken/pennsylvania/83 (h5n2) influenza virus. | the highly pathogenic a/chicken/penn./1370/83 (h5n2) avian influenza virus, which caused 80% mortality in chickens in pennsylvania, produced only mild transient illness in experimentally infected pheasants, little or no clinical signs in ring-billed gulls and pigs, and no clinical signs in pekin ducks. virus could be recovered from only the upper respiratory tract of gulls and pigs for 1-2 days. infection in ducks resulted in intestinal replication of virus in only 1 out of 12 ducks. by contrast ... | 1985 | 3985875 |
| porcine proliferative enteritis: serological, microbiological and pathological studies from three field epizootics. | three outbreaks of porcine proliferative enteritis were evaluated clinically, pathologically, microbiologically and serologically. the disease was characterized by a chronic intermittent diarrhea. pathological lesions included a thickened, turbid ileum with the microscopic appearance of proliferating ileal crypt epithelial cells. comma shaped intracytoplasmic organisms were observed in the apical portions of the proliferating crypt epithelial cells with a warthin-starry silver stain. microbiolog ... | 1986 | 3756677 |
| trichinosis surveillance, united states, 1986. | trichinella spiralis is a parasite of carnivorous animals that causes the disease trichinosis. in the united states, people become infected by eating poorly cooked pork products or wild animal meat that is infected with the parasite. although fewer than 100 cases per year are reported to cdc, trichinosis continues to persist as a public health problem in this country. public health officials believe that the reported cases represent only a fraction of the total number of cases, since many of the ... | 1988 | 3148105 |
| occupational health characteristics of women on dairy farms in pennsylvania. | women play a significant role in pennsylvania production agriculture, thereby exposing themselves to occupational health risks. the goal of this cross-sectional study was to assess the incidence of health conditions with a possible zoonotic origin in this underserved population. a written survey was sent to a stratified, random sample of dairy farms in pennsylvania (n = 3709) using a modified version of the dillman method. in addition to demographic data, the survey was used to collect informati ... | 2010 | 20390727 |
| brucella suis infection in philadelphia. a survey of hog fever and asymptomatic brucellosis. | examination of hospital and public health records revealed 19 cases of brucellosis diagnosed in philadelphia between 1968 and 1972. a serologic survey at philadelphia's largest hog-processing plant, however, indicated infection in 39% of workers. if extrapolated industry-wide, the total would be several hundred in philadelphia. the infection is usually unrecognized or asymptomatic, since men were active in physically demanding jobs with agglutinin titers in excess of 1:5000. overt illness, usual ... | 1976 | 1247015 |
| society for obstetric anesthesia and perinatology. | | 1975 | 1190536 |
| clinical review: considerations for the triage of maternity care during an influenza pandemic--one institution's approach. | the ongoing pandemic of 2009 h1n1 swine-origin influenza a has heightened the world's attention to the reality of influenza pandemics and their unpredictable nature. currently, the 2009 h1n1 influenza strain appears to cause mild clinical disease for the majority of those infected. however, the risk of severe disease from this strain or other future strains remains an ongoing concern and is noted in specific patient populations. pregnant women represent a unique patient population that historica ... | 2010 | 20587086 |
| pediatric extracorporeal life support systems: education and training at penn state hershey children's hospital. | the following is a description of the training offered to extracorporeal life support (ecls)-trained staff at the penn state hershey children’s hospital. changes with the ecls circuit prompted the need for an initiative to train staff in the care of patients requiring ecls support. in addition to didactic material, we incorporated a “hands-on” approach in designing the education. during the didactic portion, the circuit was demonstrated as a wet lab. the final step offered a voluntary visit to t ... | 2010 | 21137107 |
| environmental and economic comparisons of manure application methods in farming systems. | alternative methods for applying livestock manure to no-till soils involve environmental and economic trade-offs. a process-level farm simulation model (integrated farm system model) was used to evaluate methods for applying liquid dairy (bos taurus l.) and swine (sus scrofa l.) manure, including no application, broadcast spreading with and without incorporation by tillage, band application with soil aeration, and shallow disk injection. the model predicted ammonia emissions, nitrate leaching, a ... | 2011 | 21520751 |
| swine-origin influenza a (h3n2) virus infection in two children--indiana and pennsylvania, july-august 2011. | influenza a viruses are endemic in many animal species, including humans, swine, and wild birds, and sporadic cases of transmission of influenza a viruses between humans and animals do occur, including human infections with avian-origin influenza a viruses (i.e., h5n1 and h7n7) and swine-origin influenza a viruses (i.e., h1n1, h1n2, and h3n2). genetic analysis can distinguish animal origin influenza viruses from the seasonal human influenza viruses that circulate widely and cause annual epidemic ... | 2011 | 21900876 |
| first record of the larval endoparasitoid tachinaephagus zealandicus (hymenoptera: encyrtidae) from fly hosts developing on burnt remains and in pennsylvania. | adults of the gregarious larval endoparasitoid tachinaephagus zealandicus ashmead (hymenoptera: encyrtidae) were collected from two species of carrion-inhabiting flies, phormia regina meigen (diptera: calliphoridae) and hydrotaea aenescens wiedemann (muscidae), associated with the burnt remains of a domesticated pig, sus scrofa l. (artiodactyla: suidae), during late summer in south central pennsylvania. this represents the first reported occurrence of the wasp in the state and only the second in ... | 2016 | 26875188 |