Methicillin-ResistantStaphylococcus aureus(MRSA) Nasal Carriage in Residents of Veterans Affairs Long-Term Care Facilities: Role of Antimicrobial Exposure and MRSA Acquisition

2012 ◽  
Vol 33 (6) ◽  
pp. 551-557 ◽  
Author(s):  
Nimalie D. Stone ◽  
Donna R. Lewis ◽  
Theodore M. Johnson ◽  
Thomas Hartney ◽  
Doris Chandler ◽  
...  
Keyword(s):  
Risk Factors ◽  
Long Term Care ◽  
Multivariable Analysis ◽  
Significant Risk ◽  
Care Facility ◽  
Significant Risk Factor ◽  
Nasal Carriage ◽  
Veterans Affairs ◽  
Term Care

Objective.To identify risk factors associated with methicillin-resistantStaphylococcus aureus(MRSA) acquisition in long-term care facility (LTCF) residents.Design.Multicenter, prospective cohort followed over 6 months.Setting.Three Veterans Affairs (VA) LTCFs.Participants.All current and new residents except those with short stay (<2 weeks).Methods.MRSA carriage was assessed by serial nares cultures and classified into 3 groups: persistent (all cultures positive), intermittent (at least 1 but not all cultures positive), and noncarrier (no cultures positive). MRSA acquisition was defined by an initial negative culture followed by more than 2 positive cultures with no subsequent negative cultures. Epidemiologic data were collected to identify risk factors, and MRSA isolates were typed by pulsed-field gel electrophoresis (PFGE).Results.Among 412 residents at 3 LTCFs, overall MRSA prevalence was 58%, with similar distributions of carriage at all 3 facilities: 20% persistent, 39% intermittent, 41% noncarriers. Of 254 residents with an initial negative swab, 25 (10%) acquired MRSA over the 6 months; rates were similar at all 3 LTCFs, with no clusters evident. Multivariable analysis demonstrated that receipt of systemic antimicrobials during the study was the only significant risk factor for MRSA acquisition (odds ratio, 7.8 [95% confidence interval, 2.1–28.6];P= .002). MRSA strains from acquisitions were related by PFGE to those from a roommate in 9/25 (36%) cases; 6 of these 9 roommate sources were persistent carriers.Conclusions.MRSA colonization prevalence was high at 3 separate VA LTCFs. MRSA acquisition was strongly associated with antimicrobial exposure. Roommate sources were often persistent carriers, but transmission from roommates accounted for only approximately one-third of MRSA acquisitions.

scholarly journals Risk Factors for Colonization with Yeast Species in a Veterans Affairs Long-term Care Facility

1998 ◽  
Vol 46 (7) ◽  
pp. 849-853 ◽  
Author(s):  
Sara A. Hedderwick ◽  
Jim Y. Wan ◽  
Suzanne F. Bradley ◽  
Jon A. Sangeorzan ◽  
Margaret S. Terpenning ◽  
...  
Keyword(s):  
Risk Factors ◽  
Long Term Care ◽  
Yeast Species ◽  
Care Facility ◽  
Veterans Affairs ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility

scholarly journals Risk Factors for Fecal Colonization With Multiple Distinct Strains ofEscherichia coliAmong Long-Term Care Facility Residents

2009 ◽  
Vol 30 (5) ◽  
pp. 491-493 ◽  
Author(s):  
Ebbing Lautenbach ◽  
Pam Tolomeo ◽  
Nicole Black ◽  
Joel N. Maslow
Keyword(s):  
Risk Factors ◽  
Long Term Care ◽  
Significant Risk ◽  
Care Facility ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility ◽  
E Coli ◽  
Multiple Strains

Of 49 long-term care facility residents, 21 (43%) were colonized with 2 or more distinct strains ofEscherichia coli.There were no significant risk factors for colonization with multiple strains ofE. coli.These results suggest that future efforts to efficiently identify the diversity of colonizing strains will be challenging.

scholarly journals Risk factors for COVID-19 diagnosis, hospitalization, and subsequent all-cause mortality in Sweden: a nationwide study

2021 ◽  
Vol 36 (3) ◽  
pp. 287-298
Author(s):  
Jonathan Bergman ◽  
Marcel Ballin ◽  
Anna Nordström ◽  
Peter Nordström
Keyword(s):  
Risk Factors ◽  
Down Syndrome ◽  
Long Term Care ◽  
Care Facility ◽  
Prescription Medication ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility ◽  
All Cause Mortality

AbstractWe conducted a nationwide, registry-based study to investigate the importance of 34 potential risk factors for coronavirus disease 2019 (COVID-19) diagnosis, hospitalization (with or without intensive care unit [ICU] admission), and subsequent all-cause mortality. The study population comprised all COVID-19 cases confirmed in Sweden by mid-September 2020 (68,575 non-hospitalized, 2494 ICU hospitalized, and 13,589 non-ICU hospitalized) and 434,081 randomly sampled general-population controls. Older age was the strongest risk factor for hospitalization, although the odds of ICU hospitalization decreased after 60–69 years and, after controlling for other risk factors, the odds of non-ICU hospitalization showed no trend after 40–49 years. Residence in a long-term care facility was associated with non-ICU hospitalization. Male sex and the presence of at least one investigated comorbidity or prescription medication were associated with both ICU and non-ICU hospitalization. Three comorbidities associated with both ICU and non-ICU hospitalization were asthma, hypertension, and Down syndrome. History of cancer was not associated with COVID-19 hospitalization, but cancer in the past year was associated with non-ICU hospitalization, after controlling for other risk factors. Cardiovascular disease was weakly associated with non-ICU hospitalization for COVID-19, but not with ICU hospitalization, after adjustment for other risk factors. Excess mortality was observed in both hospitalized and non-hospitalized COVID-19 cases. These results confirm that severe COVID-19 is related to age, sex, and comorbidity in general. The study provides new evidence that hypertension, asthma, Down syndrome, and residence in a long-term care facility are associated with severe COVID-19.

scholarly journals Risk factors for pneumonia and influenza hospitalizations in long-term care facility residents: a retrospective cohort study

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Patience Moyo ◽  
Andrew R. Zullo ◽  
Kevin W. McConeghy ◽  
Elliott Bosco ◽  
Robertus van Aalst ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Long Term Care ◽  
Care Facility ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility

Importance of Bacterial Burden Among Methicillin-Resistant Staphylococcus aureus Carriers in a Long-Term Care Facility

2008 ◽  
Vol 29 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Nimalie D. Stone ◽  
Donna R. Lewis ◽  
H. K. Lowery ◽  
Lyndsey A. Darrow ◽  
Catherine M. Kroll ◽  
...  
Keyword(s):  
Risk Factors ◽  
Odds Ratio ◽  
Nasal Swab ◽  
Long Term Care ◽  
Care Facility ◽  
Term Care ◽  
Long Term Care Facility ◽  
Culture Positive ◽  
Epidemiologic Characteristics

Objective.To evaluate the prevalence and transmission of methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization, as well as risk factors associated with MRSA carriage, among residents of a long-term care facility (LTCF).Design.Prospective, longitudinal cohort study.Setting.A 100-bed Veterans Administration LTCFParticipants.All current and newly admitted residents of the LTCF during an 8-week study period.Methods.Nasal swab samples were obtained weekly and cultured on MRSA-selective media, and the cultures were graded for growth on a semiquantitative scale from 0 (no growth) to 6 (heavy growth). Epidemiologic data for the periods before and during the study were collected to assess risk factors for MRSA carriage.Results.Of 83 LTCF residents, 49 (59%) had 1 or more nasal swab cultures that were positive for MRSA; 34 (41%) were consistently culture-negative (designated “noncarriers”). Of the 49 culture-positive residents, 30 (36% of the total of 83 residents) had all cultures positive for MRSA (designated “persistent carriers”), and 19 (23% of the 83 residents) had at least 1 culture, but not all cultures, positive for MRSA (designated “intermittent carriers”). Multivariate analysis showed that participants with at least 1 nasal swab culture positive for MRSA were likely to have had previous hospitalization (odds ratio, 3.9) or wounds (odds ratio, 8.2). Persistent carriers and intermittent carriers did not differ in epidemiologic characteristics but did differ in mean MRSA growth score (3.7 vs 0.7; P < .001).Conclusions.Epidemiologic characteristics differed between noncarriers and subjects with at least 1 nasal swab culture positive for MRSA. However, in this LTCF population, only the degree of bacterial colonization (as reflected by mean MRSA growth score) distinguished persistent carriers from intermittent carriers. Understanding the burden of colonization may be important when determining future surveillance and control strategies.

scholarly journals Risk factors for development of aminoglycoside resistance among gram-negative rods

2019 ◽  
Vol 76 (22) ◽  
pp. 1838-1847
Author(s):  
Stefan E Richter ◽  
Loren Miller ◽  
Jack Needleman ◽  
Daniel Z Uslan ◽  
Douglas Bell ◽  
...  
Keyword(s):  
Risk Factors ◽  
Long Term Care ◽  
Care Facility ◽  
Aminoglycoside Resistance ◽  
Term Care ◽  
Gram Negative ◽  
Term Care Facility ◽  
Long Term Care Facility ◽  
C Statistic

Abstract Purpose Development of scoring systems to predict the risk of aminoglycoside resistance and to guide therapy is described. Methods Infections due to aminoglycoside-resistant gram-negative rods (AR-GNRs) are increasingly common and associated with adverse outcomes; selection of effective initial antibiotic therapy is necessary to reduce adverse consequences and shorten length of stay. To determine risk factors for AR-GNR recovery from culture, cases of GNR infection among patients admitted to 2 institutions in a major academic hospital system during the period 2011–2016 were retrospectively analyzed. Gentamicin and tobramycin resistance (GTR-GNR) and amikacin resistance (AmR-GNR) patterns were analyzed separately. A total of 26,154 GNR isolates from 12,516 patients were analyzed, 6,699 of which were GTR, and 2,467 of which were AmR. Results In multivariate analysis, risk factors for GTR-GNR were presence of weight loss, admission from another medical or long-term care facility, a hemoglobin level of &lt;11 g/dL, receipt of any carbapenem in the prior 30 days, and receipt of any fluoroquinolone in the prior 30 days (C statistic, 0.63). Risk factors for AmR-GNR were diagnosis of cystic fibrosis, male gender, admission from another medical or long-term care facility, ventilation at any point prior to culture during the index hospitalization, receipt of any carbapenem in the prior 30 days, and receipt of any anti-MRSA agent in the prior 30 days (C statistic, 0.74). Multinomial and ordinal models demonstrated that the risk factors for the 2 resistance patterns differed significantly. Conclusion A scoring system derived from the developed risk prediction models can be applied by providers to guide empirical antimicrobial therapy for treatment of GNR infections.

A Norovirus Outbreak at a Long-Term-Care Facility: The Role of Environmental Surface Contamination

2005 ◽  
Vol 26 (10) ◽  
pp. 802-810 ◽  
Author(s):  
Henry M. Wu ◽  
Mary Fornek ◽  
Kellogg J. Schwab ◽  
Amy R. Chapin ◽  
Kristen Gibson ◽  
...  
Keyword(s):  
Risk Factors ◽  
Long Term Care ◽  
Care Facility ◽  
Rt Pcr ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility ◽  
Environmental Surface

AbstractBackground:The role of environmental surface contamination in the propagation of norovirus outbreaks is unclear. An outbreak of acute gastroenteritis was reported among residents of a 240-bed veterans long-term-care facility.Objectives:To identify the likely mode of transmission, to characterize risk factors for illness, and to evaluate for environmental contamination in this norovirus outbreak.Methods:An outbreak investigation was conducted to identify risk factors for illness among residents and employees. Stool and vomitus samples were tested for norovirus by reverse transcription polymerase chain reaction (RT-PCR). Fourteen days after outbreak detection, ongoing cases among the residents prompted environmental surface testing for norovirus by RT-PCR.Results:One hundred twenty-seven (52%) of 246 residents and 84 (46%) of 181 surveyed employees had gastroenteritis. Case-residents did not differ from non-case-residents by comorbidities, diet, room type, or level of mobility. Index cases were among the nursing staff. Eight of 11 resident stool or vomitus samples tested positive for genogroup II norovirus. The all-cause mortality rate during the month of the outbreak peak was significantly higher than the expected rate. Environmental surface swabs from case-resident rooms, a dining room table, and an elevator button used only by employees were positive for norovirus. Environmental and clinical norovirus sequences were identical.Conclusion:Extensive contamination of environmental surfaces may play a role in prolonged norovirus outbreaks and should be addressed in control interventions.

Clostridium difficile Infection in a Department of Veterans Affairs Long-Term Care Facility

2011 ◽  
Vol 32 (5) ◽  
pp. 513-515 ◽  
Author(s):  
Dubert M. Guerrero ◽  
Michelle M. Nerandzic ◽  
Lucy A. Jury ◽  
Shelley Chang ◽  
Robin L. Jump ◽  
...  
Keyword(s):  
Clostridium Difficile ◽  
Long Term Care ◽  
Medical Center ◽  
Care Facility ◽  
Healthcare Facility ◽  
Veterans Affairs ◽  
Term Care ◽  
Term Care Facility ◽  
Long Term Care Facility

In a Veterans Affairs medical center, 39% of healthcare facility–onset, healthcare facility-associated Clostridium difficile infections had their onset in the affiliated long-term care facility (LTCF). Eighty-five percent of LTCF-onset patients had been transferred from the hospital within the past month. Delays in diagnosis and treatment were common for LTCF-onset patients.

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