ABSTRACT
BACKGROUND AND AIMS: Micro-elimination projects targeted to specific hepatitis C virus (HCV) risk populations have been successful. Systematic identification of persons with HCV viremia, regardless of risk group, based on already available laboratory records may represent an effective macroelimination approach to achieve global HCV elimination. METHODS: Persons with a last positive HCV-RNA PCR result between 2008-2020 in the reference virology laboratories in eastern Austria were identified. First, (i) we described their demographic characteristics, (ii) we systematically recalled persons to the respective centers and (iii) started antiviral treatment if HCV-RNA viremia was confirmed, and (iv) recorded sustained virologic response (SVR). This interim report includes the preliminary results from 8 participating centers. RESULTS: During the study period 22,682 persons underwent HCV-RNA PCR testing, 11,216 (49.4%) were positive at any point in time, and 6006 (26.5%) showed detectable HCV-RNA at the last PCR test, suggesting ongoing HCV viremia. At the time of this interim report, 2546/6006 HCV-RNA PCR(+) persons were evaluated: 443/2546 (17.4%) had died, 852/2546 (33.5%) had invalid contact data, and 547/2546 (21.5%) had achieved SVR between data retrieval and recall. Contact could be established in 236/704 (33.5%) of the remaining target population with 97/236 (41.1%) presenting at the clinic for treatment evaluation. Ultimately, 71/236 (30.1%) started antiviral treatment and SVR was documented in 47/71 (66.2%). CONCLUSION: This ELIMINATE project based on systematic assessment of HCV-RNA PCR-records, identified 6006 persons with potential persisting HCV viremia. Invalid contact data and missed visits for treatment evaluation were the main barriers towards HCV elimination within this project. Importantly, many subjects with HCV viremia lost to follow-up were successfully linked to care and started antiviral treatment.
ABSTRACT
Septic shock is the most common cause of death in intensive care units. During the last two decades, new strategies have focused on the diagnosis and on the immunological changes in critically ill patients. There have been conflicting reports whether monocyte human leukocyte antigen (HLA) DR expression poses a useful parameter to characterize clinical outcome of these patients. To elucidate the role of monocyte HLA-DR expression, we hypothesized that low expression of HLA-DR on circulating human monocytes in critically ill patients correlates with higher mortality and that cutoff values of HLA-DR discriminate surviving from nonsurviving patients. In this retrospective study, monocyte HLA-DR expression in 413 critically ill patients was investigated during their intensive care unit stay. Human leukocyte antigen DR was determined in a quantitative and standardized procedure by flow cytometry (anti-HLA-DR monoclonal antibodies bound per cell [mABs/cell]) at least every third day or when clinical changes in the patients conditions were observed. Healthy probands served as control group to determine the range of "normal" values. As expected, HLA-DR expression was significantly higher in the group of survivors (n = 279) than in the group of nonsurvivors (n = 134; mABs/cell: 23,038 [SD, 11,150] vs. 18,070 [SD, 8,906]; P < 0.001). When minimal HLA-DR values per patient were compared, no cutoff values could be identified between the groups of survivors and nonsurvivors (mABs/cell: 19,611 [SD, 11,129] vs. 14,944 [SD, 8,013]; P < 0.001). In conclusion, in this sizable cohort we could again show that HLA-DR expression is decreased in critically ill patients but it is not suitable as a prognostic or predictive parameter for clinical outcome.
