| incidence of hepatitis-associated antigen in a toronto hospital. | | 1971 | 5000822 |
| hepatitis b and human immunodeficiency virus infection in street youths in toronto, canada. | hepatitis b and human immunodeficiency virus are transmitted by venereal contact or by the sharing of used needles during drug use. a questionnaire was administered to street youths admitting to prostitution and to a group denying prostitution, as well as to sexually active adolescents who lived with their family and were attending an adolescent medical clinic. the age, gender, race, number of sexual partners, condom use, illicit drug use, anal intercourse and admission to prostitution were reco ... | 1991 | 2062604 |
| hepatitis b surface antigen and antibody in asymptomatic blood donors. | seventy-two volunteer blood donors who had hepatitis b surface antibody (anti-hbs) were studied and compared with 115 carriers of hepatitis b surface antigen (hbsag). anti-bhs-positive donors gave a history of greater possible exposure to hepatitis b virus, there was a lower male-female ratio, and they had a much lower frequency of abnormal hepatic function test results. those who were positive by counterimmunoelectrophoresis (ciep), which indicated a high titer of antibody (greater than 1:2,000 ... | 1976 | 946183 |
| hepatitis and hepatitis b surface antigen and antibody in dentists. | dentists were surveyed regarding a history of hepatitis and the presence in the blood of hepatitis b surface antigen (hbsag) and antibody (anti-hbs) to determine whether they were at high risk of exposure to hepatitis b virus. of 288 canadian dentists 5.2% gave a history of hepatitis after graduation. this proportion is similar to that for 1462 ontario dentists (6.3%) and that for 3162 accountants (5.1%) who had previously completed a mailed questionnaire. one dentist (0.3%) was hbsag-positive a ... | 1978 | 743666 |
| physician peer assessments for compliance with methadone maintenance treatment guidelines. | medical associations and licensing bodies face pressure to implement quality assurance programs, but evidence-based models are lacking. to improve the quality of methadone maintenance treatment (mmt), the college of physicians and surgeons of ontario, canada, conducts an innovative quality assurance program on the basis of peer assessments. using data from this program, we assessed physician compliance with mmt guidelines and determined whether physician factors (e.g., training, years of practic ... | 2007 | 18085599 |
| an outbreak of hepatitis b associated with reusable subdermal electroencephalogram electrodes. hepatitis b outbreak investigation team. | in early 1996 an outbreak of hepatitis b was detected among patients who attended an electroencephalogram (eeg) clinic in toronto operated by a neurologist. in this article we report the results of an investigation conducted to determine the extent and source of the outbreak. | 2000 | 10789626 |
| improved compliance with recommended infection control practices in the dental office between 1994 and 1995. | to investigate changes in ontario dentists' infection control practices between 1994 and 1995. | 1998 | 9503109 |
| the infection control practices of general dental practitioners. | to investigate the infection control practices of general dentists in ontario in 1994. | 1997 | 9350462 |
| the prevalence of positive hepatitis b, hepatitis c, and hiv serology in cornea donors prescreened by medical and social history in ontario, canada. | to determine the prevalence of hepatitis b (hbv), hepatitis c (hcv), and human immunodeficiency virus (hiv) in the serum of cornea donors who had been previously screened by social and medical history by the eye bank of canada, ontario division. | 1997 | 9294680 |
| infection control in the orthodontic office in canada. | because of the difficulty of identifying infected persons, current recommendations for infection control are to treat all patients as if they are infected with blood-borne pathogens such as human immunodeficiency virus (hiv) and the hepatitis viruses. dentists' compliance with these recommendations has been investigated previously, however, there are few data related to orthodontists. the objective of this study was to measure the proportion of orthodontists who report the use of recommended inf ... | 1997 | 9294356 |
| the university of toronto liver transplant program. | the university of toronto liver transplant program began in 1985 at a time when the procedure had already evolved from an experimental form of surgery to an accepted treatment for many forms of liver failure. the program was established not only to provide clinical care for patients but also to address academically the barriers which impeded success. the program brought together experts in medicine, surgery, pathology, and the basic sciences of immunology, virology and molecular biology. our gro ... | 1996 | 9286567 |
| should canada and the united states universally vaccinate infants against hepatitis b? a cost-effectiveness analysis. | this paper examines the economic attractiveness of universal vaccination of infants with hepatitis b virus (hbv) vaccine by calculating the incremental cost-effectiveness of this strategy when compared with the currently recommended strategy of screening all pregnant women and vaccinating only infants born to hbsag+ mothers. a decision-analytic model involving a markov process to model the long-term sequelae of hbv infection was constructed to estimate the expected costs and life expectancies fo ... | 1993 | 8433635 |
| detection of hepatitis b virus dna in the serum of canadian hepatitis b surface antigen negative, anti-hbc positive individuals, using the polymerase chain reaction. | continuing hepatitis b virus (hbv) infection is normally associated with the presence of hepatitis b surface antigen (hbsag) in the serum. in spite of sensitive screening assays for hbsag, rare cases of post-transfusion hbv infection are still observed. antibody to hepatitis b core antigen (anti-hbc) often indicates remote hbv infection but dna hybridisation and more sensitive polymerase chain reaction (pcr) assays have demonstrated that some hbsag negative individuals, positive for anti-hbc, ha ... | 1994 | 7852973 |
| hepatitis c virus infection in patients infected with the human immunodeficiency virus. | the prevalence and characteristics of hepatitis c virus (hcv) infection in 226 patients who were seropositive for human immunodeficiency virus (hiv) were determined. antibody to hcv (anti-hcv) was detected by enzyme immunoassay (eia), and positive results were confirmed by a neutralization eia or recombinant immunoblot assay. the prevalence of anti-hcv was 8%. intravenous drug use was the most common risk factor for hcv infection (61.1% of patients), and 52.4% of intravenous drug users were sero ... | 1993 | 7688986 |
| screening for hepatocellular carcinoma in chronic carriers of hepatitis b virus: incidence and prevalence of hepatocellular carcinoma in a north american urban population. | to prospectively determine the prevalence and annual incidence of hepatocellular carcinoma in hepatitis b carriers in a heterogeneous urban north american population and to assess the diagnostic accuracy of tests used for screening for this cancer. | 1995 | 7543434 |
| hepatitis b vaccine requirements in at-risk hospital personnel: a survey of hospitals in metropolitan toronto. | approximately 50 000 individuals are employed in various hospital-based occupations in metropolitan toronto. to determine the proportion of this population that might be considered as first-priority recipients of the new hepatitis b vaccine, a questionnaire was sent to the executive directors of 45 hospitals in this region. the questionnaire requested data on the numbers of full- and part-time employees whose frequency of contact with blood and blood-related equipment was the greatest. the respo ... | 1983 | 6825019 |
| prevalence of hepatitis b surface antigen and antibody (hepatitis b virus markers) in personnel at a children's hospital. | after two cases of acute hepatitis b infection occurred in phlebotomists at the hospital for sick children in 1985, a seroprevalence survey of hepatitis b virus markers was undertaken. directors in high-risk areas were advised by phone and memorandum to screen employees. participation was entirely voluntary, and employees who did not respond were contacted six weeks after initial notification. information obtained from each participant through a self-administered questionnaire included age, dura ... | 1987 | 3618579 |
| prevalence of hepatitis b infection among residents of an institution for the mentally retarded. | data on prevalence of antibody to hepatitis b surface antigen (anti-hbs) and of hepatitis b surface antigen (hbsag) among 95 matched pairs of down's syndrome (ds) and other mentally retarded (omr) patients in an institution were analyzed by age on admission and by length of residence. passive hemagglutination test were used to determine anti-hbs. anti-hbs prevalence increased with admission age among ds patients (26%, 42% and 56% for age groups less than or equal to 5, 6-15 and greater than 15 y ... | 1977 | 138362 |
| the impact of infection on population health: results of the ontario burden of infectious diseases study. | evidence-based priority setting is increasingly important for rationally distributing scarce health resources and for guiding future health research. we sought to quantify the contribution of a wide range of infectious diseases to the overall infectious disease burden in a high-income setting. | 2012 | 22962601 |
| determining rates of hepatitis c in a clozapine treated cohort. | to determine the prevalence rates of hepatitis c in patients with schizophrenia and schizoaffective disorder being treated with clozapine. | 2010 | 20605572 |
| evidence-based strategies to improve immunization compliance of postgraduate medical trainees at large academic-medical facilities. | the purpose of this evaluation is to assess the effectiveness of the modifications made by the university of toronto postgraduate medical education to improve medical trainee compliance with the immunization standards set forth in national guidelines, provincial regulations and protocols and university policy. trainee compliance with immunization requirements were evaluated as of january 2003, 2004 and 2005. statistically significant increases in compliance rates for all required immunizations-- ... | 2007 | 17491572 |
| surgical management of hepatocellular carcinoma: resection or transplantation? | liver resection or transplantation offers the best opportunity for cure of hepatocellular carcinoma (hcc). to determine the relative roles for resection and transplantation and to evaluate the patient and tumor characteristics that might predict survival, the records of 125 patients treated for nonfibrolamellar hcc at the toronto hospital between 1981 and 1996 were reviewed. no adjuvant chemotherapy or antiviral protocols were used. resection was the first operation in 67 patients; one underwent ... | 1998 | 9841964 |
| prevalence of hepatitis b markers in occupational health nurses. | a seroprevalence study was undertaken at the 14th annual conference of the occupational health nurses association of ontario. a total of 151 self-selected registrants (33%) provided demographic, health, and occupational information. blood was drawn for hepatitis b serology (hepatitis b surface antigen, core antibody, and surface antibody). vaccine-induced seropositivity was found in 11 persons (7.3%) while naturally occurring markers were present in 13 nurses (8.6%). this exceeds the natural pre ... | 1987 | 3655952 |
| hiv/hepatitis c virus and hiv/hepatitis b virus coinfections protect against antiretroviral-related hyperlipidaemia. | hyperlipidaemia is a recognized complication of hiv antiretroviral therapy. the interactions among hiv, viral hepatitis, antiretroviral therapies and lipids are poorly understood. | 2011 | 21244600 |