Influenza outbreak in a Canadian correctional facility.

Correctional facilities face increased risk of communicable disease transmission and outbreaks. We describe the progression of an influenza outbreak in a Canadian remand facility and suggest strategies for preventing, identifying and responding to outbreaks in this setting. In total, six inmates had laboratory-confirmed influenza resulting in 144 exposed contacts. Control measures included enhanced isolation precautions, restricting admissions to affected living units, targeted vaccination and antiviral prophylaxis. This report highlights the importance of setting specific outbreak guidelines in addressing population and environmental challenges, as well as implementation of effective infection prevention and control (IPAC) and public health measures when managing influenza and other communicable disease outbreaks.

Varicella zoster virus transmission in youth during incarceration.

Purpose - Facility-based Varicella zoster virus (VZV) transmission is reported in a Canadian youth offender correctional centre (YOCC). Transmission occurred from an immunocompetent youth offender (YO) with localized Herpes zoster to another immunocompetent single dose vaccinated YO, resulting in Varicella zoster (VZ) breakthrough disease. The purpose of this paper is to identify infection prevention and control (IPAC) measures utilized in this setting. Design/methodology/approach - A retrospective chart and immunization record review was conducted for two VZV cases and 27 exposed YO contacts in order to obtain demographic, clinical and immunization data. Descriptive data analysis was performed. Findings - All VZV cases and exposed contacts were male with an average age of 14.2 and 15.6 years for cases and contacts, respectively. Both cases shared the same living unit in the YOCC. There were 28 identified YO contacts, of whom 70 percent were single dose vaccinated with univalent vaccine, followed by 22 percent with a previous history of Varicella disease. All cases and contacts were born in Canada. No foreign-born populations were involved with this event. Infection control measures included additional precaution management, enhanced surveillance and environmental cleaning. As such, no hospitalizations or post-exposure immunizations were required. Originality/value - This report highlights the role that VZ breakthrough disease could play in fueling an outbreak in a high-risk environment without rapid recognition and implementation of preventative measures. It also underscores the importance of IPAC presence and public health immunization programs within correctional centers to avoid infectious disease threats.

Assessment of HIV Knowledge in Correctional Facility Health Care Workers: A Pilot Study of an Educational Intervention.

HIV rates are disproportionately higher in the incarcerated compared to the general population. Unfortunately, HIV sero-positive inmates report perceived discrimination and missed antiretroviral doses. Correctional facility nursing competency in HIV management may mitigate these concerns. Using validated knowledge instruments, the authors measured baseline HIV knowledge in correctional facility nurses from 3 correctional facilities in Alberta, Canada, and quantified changes after a targeted educational workshop. Basic HIV knowledge increased significantly, whereas perceived need for further HIV education significantly decreased postintervention. This study demonstrates that correctional facility nurses may not receive ideal HIV education during employment and that targeted HIV workshops can significantly increase knowledge and confidence when caring for affected individuals.

Factors associated with noncompletion of latent tuberculosis infection treatment in an inner-city population in Edmonton, Alberta.

A limited number of studies have been published that examine treatment completion rates and interventions used to increase treatment completion within an inner-city population. The purpose of the present study was to determine the rate of latent tuberculosis infection (LTBI) treatment completion in an inner-city population in Edmonton, Alberta, and to identify factors that correlated with treatment completion. A retrospective chart review was conducted involving patients who started LTBI treatment between January 1, 2005 and December 31, 2010 in Edmonton's inner city. A total of 77 patients started treatment and 57 (74%) patients completed LTBI treatment. Homelessness was the only variable that was significantly associated with incomplete treatment (OR 8.0 [95% CI 1.4 to 45.6]) and it remained significant when controlling for drug use (adjusted OR 6.5 [95% CI 1.1 to 38.8]). While the present study demonstrated treatment completion rates comparable with or better than those described in the general population, it highlighted the need for continued emphasis on interventions aimed at improving outcomes within homeless populations.

Quelques études publiées ont porté sur le taux d'achèvement des traitements et les interventions utilisées pour accroître cet achèvement dans la population d'un quartier pauvre. La présente étude visait à déterminer le taux d'achèvement du traitement contre l'infection tuberculeuse latente (ITL) dans la population d'un quartier pauvre d'Edmonton, en Alberta, et déterminer les facteurs qui corrélaient cet achèvement. Les chercheurs ont effectué une recherche rétrospective dans les dossiers des patients qui avaient un amorcé un traitement contre l'ITL entre le 1er janvier 2005 et le 31 décembre 2010 dans un quartier pauvre d'Edmonton. Au total, 77 patients ont amorcé le traitement contre l'ITL et 57 patients (74 %) l'ont terminé. L'itinérance était la seule variable qui s'associait de manière significative à un traitement incomplet (RR 8,0 [95 % IC 1,4 à 45,6]), et elle demeurait significative lorsqu'on tenait compte de la consommation de drogue (RR rajusté 6,5 [95 % IC 1,1 à 38,8]). La présente étude faisait état d'un taux d'achèvement comparable ou meilleur à celui décrit dans la population générale, mais faisait ressortir la nécessité d'insister constamment sur des interventions visant à améliorer les résultats cliniques dans les populations d'itinérants.

A shelter-associated tuberculosis outbreak: a novel strain introduced through foreign-born populations.

OBJECTIVE: An outbreak of tuberculosis (TB) in a large urban apartment building and three homeless shelters within a one-block radius in Edmonton, Alberta occurred between 2008 and 2009. The purpose of this report is to describe the transmission dynamics of this multiethnic, multicentre inner-city TB outbreak. METHODS: A retrospective chart review was conducted through the Integrated Public Health Information Systems (iPHIS) to extract demographic, clinical and treatment data as well as data for contacts for all 19 cases involved in the outbreak. TB isolates were genotyped using molecular IS6110 restriction fragment-length polymorphism (RFLP). Categorical variables were compared using Fisher's exact test and continuous variables were analyzed using the Kruskal Wallis test. RESULTS: Two groups were identified through genotyping. One group consisted of 9 cases with a newly identified TB genotype circulating in Alberta. All of the cases in this group were among males and two thirds were among individuals from northeast Africa, with subsequent transmission into Canadian-born populations through exposure during shelter stays. The second group (n=3) identified were infected by a previously circulating strain of TB in Alberta and consisted of Canadian-born Aboriginal people. CONCLUSION: This study demonstrates the transmission of a novel TB strain from foreign-born populations to Canadian-born populations through location-based settings serving vulnerable populations. This study highlights the changing demographic and emerging health concerns for under-housed populations in Canada.