scholarly journals 2742. The Impact of Influenza Vaccination on Antibiotic Use in the United States, 2010–2017

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S965-S966
Author(s):  
Eili Klein ◽  
Emily Schueller ◽  
Katie K Tseng ◽  
Arindam Nandi
Keyword(s):  
United States ◽  
Antibiotic Resistance ◽  
Influenza Vaccination ◽  
Vaccination Coverage ◽  
Seasonal Influenza ◽  
Antibiotic Use ◽  
The United States ◽  
Antibiotic Prescribing ◽  
Coverage Rates ◽  
The Impact

Abstract Background Antibiotic resistance is a cause of morbidity and mortality driven by inappropriate prescribing. In the United States, a third of all outpatient antibiotic prescriptions may be inappropriate. Seasonal influenza rates are significantly associated with antibiotic prescribing rates. The impact of influenza vaccination coverage on antibiotic prescribing is unknown. Methods We conducted a retrospective analysis of state-level vaccination coverage and antibiotic prescribing rates from 2010 to 2017. We used fixed effects regression to analyze the relationship between cumulative vaccine coverage rates for a season and the per capita number of prescriptions for systemic antibiotics for the corresponding season (January–March) controlling for temperature, poverty, healthcare infrastructure, population structure, and vaccine effectiveness. Results Rates of vaccination coverage ranged from 33% in Nevada to 52% in Rhode Island for the 2016–2017 season, while antibiotic use rates ranged from 25 prescriptions per 1,000 inhabitants in Alaska to 377 prescriptions per 1,000 inhabitants in West Virginia (Figure 1). Vaccination coverage rates were highly correlated with reduced prescribing rates, and controlling for other factors, we found that a one percent increase in the influenza vaccination rate was associated with 1.40 (95% CI: 2.22–0.57, P < 0.01) fewer antibiotic prescriptions per 1,000 inhabitants (Table 1). Increases in the vaccination coverage rate in the pediatric population (aged 0–18) had the strongest effect, followed by the elderly (aged 65+). Conclusion Vaccination can reduce morbidity and mortality from seasonal influenza. Though coverage rates are far below levels necessary to generate herd immunity, we found that higher coverage rates in a state were associated with lower antibiotic prescribing rates. While the effectiveness of the vaccine varies from year to year and the factors that drive antibiotic prescribing rates are multi-factorial, these results suggest that increased vaccination coverage for influenza would have significant benefit in terms of reducing antibiotic overuse and correspondingly antibiotic resistance. Disclosures All authors: No reported disclosures.

scholarly journals The Impact of Influenza Vaccination on Antibiotic Use in the United States, 2010–2017

2020 ◽  
Vol 7 (7) ◽  
Author(s):  
Eili Y Klein ◽  
Emily Schueller ◽  
Katie K Tseng ◽  
Daniel J Morgan ◽  
Ramanan Laxminarayan ◽  
...  
Keyword(s):  
United States ◽  
Influenza Vaccination ◽  
Vaccination Coverage ◽  
State Level ◽  
Population Level ◽  
Antibiotic Use ◽  
The United States ◽  
Vaccine Effectiveness ◽  
Severe Illness ◽  
Antibiotic Prescribing

Abstract Background Influenza, which peaks seasonally, is an important driver for antibiotic prescribing. Although influenza vaccination has been shown to reduce severe illness, evidence of the population-level effects of vaccination coverage on rates of antibiotic prescribing in the United States is lacking. Methods We conducted a retrospective analysis of influenza vaccination coverage and antibiotic prescribing rates from 2010 to 2017 across states in the United States, controlling for differences in health infrastructure and yearly vaccine effectiveness. Using data from IQVIA’s Xponent database and the US Centers for Disease Control and Prevention’s FluVaxView, we employed fixed-effects regression analysis to analyze the relationship between influenza vaccine coverage rates and the number of antibiotic prescriptions per 1000 residents from January to March of each year. Results We observed that, controlling for socioeconomic differences, access to health care, childcare centers, climate, vaccine effectiveness, and state-level differences, a 10–percentage point increase in the influenza vaccination rate was associated with a 6.5% decrease in antibiotic use, equivalent to 14.2 (95% CI, 6.0–22.4; P = .001) fewer antibiotic prescriptions per 1000 individuals. Increased vaccination coverage reduced prescribing rates the most in the pediatric population (0–18 years), by 15.2 (95% CI, 9.0–21.3; P &lt; .001) or 6.0%, and the elderly (aged 65+), by 12.8 (95% CI, 6.5–19.2; P &lt; .001) or 5.2%. Conclusions Increased influenza vaccination uptake at the population level is associated with state-level reductions in antibiotic use. Expanding influenza vaccination could be an important intervention to reduce unnecessary antibiotic prescribing.

scholarly journals Impact of existing vaccines in reducing antibiotic resistance: Primary and secondary effects

2018 ◽  
Vol 115 (51) ◽  
pp. 12896-12901 ◽  
Author(s):  
Keith P. Klugman ◽  
Steven Black
Keyword(s):  
Antibiotic Resistance ◽  
Influenza Vaccination ◽  
Direct Reduction ◽  
Antibiotic Use ◽  
The United States ◽  
Antibiotic Usage ◽  
Secondary Effect ◽  
Antibiotic Resistant ◽  
Vaccination Programs ◽  
The Impact

Vaccines impact antibiotic-resistant infections in two ways: through a direct reduction in the organisms and strains carrying resistant genes that are specifically targeted by the vaccine and also via a secondary effect through a reduction in febrile illnesses that often lead to the use of antibiotics. We review here the impact of pneumococcal conjugate vaccines (PCVs) on the prevalence of antibiotic-resistant disease and antibiotic usage as an example of the direct effect of vaccines on antibiotic resistance and the impact of influenza vaccination on antibiotic usage as an example of a secondary effect. A prelicensure study of a PCV in Africa demonstrated 67% fewer penicillin-resistant invasive disease episodes in the PCV group compared with controls. Similar studies in the United States and Europe demonstrated reductions in antibiotic use consistent with the vaccines’ impact on the risk of otitis media infections in children. Postlicensure reductions in the circulation of antibiotic-resistant strains targeted by the vaccines have been dramatic, with virtual elimination of these strains in children following vaccine introduction. In terms of a secondary effect, following influenza vaccination reductions of 13–50% have been observed in the use of antibiotics by individuals receiving influenza vaccine compared with controls. With the demonstrated effectiveness of vaccination programs in impacting the risk of antibiotic-resistant infections and the increasing threat to public health that these infections represent, more attention needs to be given to development and utilization of vaccines to address antibiotic resistance.

scholarly journals Seasonal Influenza Vaccination Coverage Among Adult Populations in the United States, 2005-2011

2013 ◽  
Vol 178 (9) ◽  
pp. 1478-1487 ◽  
Author(s):  
P.-J. Lu ◽  
J. A. Singleton ◽  
G. L. Euler ◽  
W. W. Williams ◽  
C. B. Bridges
Keyword(s):  
United States ◽  
Influenza Vaccination ◽  
Vaccination Coverage ◽  
Seasonal Influenza ◽  
The United States ◽  
Seasonal Influenza Vaccination

scholarly journals 2062. Improving Antibiotic Prescribing in the Ambulatory Care Setting—Stewardship through Influenza Vaccination, US Flu VE Network 2013–2014 Through 2017–2018

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S695-S695
Author(s):  
Emily Smith ◽  
Alicia M. Fry ◽  
Lauri Hicks ◽  
Katherine E Fleming-Dutra ◽  
Emily T Martin ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Influenza Vaccine ◽  
Influenza Vaccination ◽  
Vaccine Coverage ◽  
Improve Patient Safety ◽  
Respiratory Illness ◽  
Antibiotic Use ◽  
The United States ◽  
Antibiotic Prescribing ◽  
Ambulatory Care Setting

Abstract Background Improving antibiotic use is a key strategy to combat antibiotic resistance and improve patient safety. Acute respiratory illness (ARI) is a common cause of outpatient visits and accounts for ~41% of antibiotics used in the United States. We sought to determine the proportion of antibiotic prescriptions (Rx) prescribed among outpatients with ARI that can be potentially averted through influenza vaccination. Methods From 2013–2014 through 2017–2018 influenza seasons, we enrolled patients aged ≥6 months with ARI in the US Influenza Vaccine Effectiveness (VE) Network of >50 outpatient clinics. Antibiotic Rx and diagnosis codes were collected from medical records. Study influenza test results were not available to treating clinicians at most sites, and clinical influenza testing was infrequently performed (a), prevalence of influenza among unvaccinated ARI patients (b), prevalence of antibiotic Rx among unvaccinated influenza-positive ARI patients (c) and prevalence of antibiotic Rx among ARI patients overall (d), we derived estimates of the proportion of ARI antibiotic Rx that can be averted by influenza vaccination [(a × b × c)/d]. Results Among 37487 outpatients with ARI, 13,316 (36%) were prescribed an antibiotic and 9,689 (26%) tested positive for influenza. Of those positive, 2,496 (26%) were prescribed an antibiotic. Adjusted VE against influenza-associated ARI was 35% (95% confidence interval (CI), 32 to 39). Among unvaccinated patients with ARI, 30% were influenza-positive and 24% received antibiotics. Based on these estimates, we determined that influenza vaccination may prevent 10.6% of all ARI syndromes and may avert 1 in 14 or 7.3% of antibiotic Rx among ARI patients. Conclusion By preventing influenza-associated ARI syndromes, influenza vaccination may substantially reduce antibiotic prescribing. Increasing influenza vaccine coverage and improving protection may facilitate national goals to improve antibiotic use and reduce the global threat of antibiotic resistance. Disclosures All authors: No reported disclosures.

scholarly journals Estimating the proportion of bystander selection for antibiotic resistance in the US

2018 ◽  
Author(s):  
Christine Tedijanto ◽  
Scott Olesen ◽  
Yonatan Grad ◽  
Marc Lipsitch
Keyword(s):  
Antibiotic Resistance ◽  
Medical Care ◽  
Antibiotic Use ◽  
The United States ◽  
Microbial Flora ◽  
Antibiotic Prescribing ◽  
Care Survey ◽  
Selection For ◽  
Ambulatory Medical Care ◽  
The Impact

AbstractBystander selection -- the selective pressures exerted by antibiotics on microbial flora that are not the target pathogen of treatment -- is critical to understanding the total impact of broad-spectrum antibiotic use; however, to our knowledge, this effect has never been quantified. Using the 2010-2011 National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey (NAMCS/NHAMCS), the Human Microbiome Project, and additional carriage and etiological data from existing literature, we estimate the magnitude of bystander selection for a range of clinically relevant antibiotic-species pairs as the proportion of all exposures of an antibiotic experienced by a species for conditions in which that species was not the causative pathogen (“proportion of bystander exposures”). For outpatient prescribing in the United States, we find that this proportion over all included antibiotics is over 80% for 8 out of 9 organisms of interest. Low proportions of bystander exposure are often associated with infrequent bacterial carriage or a high proportion of antibiotic prescribing focused on conditions caused by the species of interest. Using the proportion of bystander exposures, we roughly estimate that S. aureus and E. coli may benefit from 90.7% and 99.7%, respectively, of the estimated reduction in antibiotic use due to pneumococcal conjugate vaccination, despite not being the pathogen targeted by the vaccine. These results underscore the importance of considering antibiotic exposures to bystanders, in addition to the targeted pathogen, in measuring the impact of antibiotic resistance interventions.Significance StatementThe forces that contribute to changing population prevalence of antibiotic resistance are not well understood. Bystander selection -- the inadvertent pressures imposed by antibiotics on the microbial flora other than the pathogen targeted by treatment -- is hypothesized to be a major factor in the propagation of antibiotic resistance, but its extent has not been characterized. We estimate the proportion of bystander exposures across a range of antibiotics and organisms and describe factors driving variability of these proportions. Impact estimates for antibiotic resistance interventions, including vaccination, are often limited to effects on a target pathogen. However, the reduction of antibiotic treatment for illnesses caused by the target pathogen may have the broader potential to decrease bystander selection pressures for resistance on many other organisms.

scholarly journals Monitoring seasonal influenza vaccination coverage among pregnant women in the United States

2012 ◽  
Vol 207 (3) ◽  
pp. S9-S16 ◽  
Author(s):  
Erin D. Kennedy ◽  
Indu B. Ahluwalia ◽  
Helen Ding ◽  
Peng-Jun Lu ◽  
James A. Singleton ◽  
...  
Keyword(s):  
United States ◽  
Influenza Vaccination ◽  
Pregnant Women ◽  
Vaccination Coverage ◽  
Seasonal Influenza ◽  
The United States ◽  
Seasonal Influenza Vaccination

scholarly journals Clinical impact of pharmacist-led antibiotic stewardship programs in outpatient settings in the United States: A scoping review

2021 ◽  
Author(s):  
James St. Louis ◽  
Arinze Nkemdirim Okere
Keyword(s):  
United States ◽  
Usual Care ◽  
Antibiotic Stewardship ◽  
The United States ◽  
Controlled Trials ◽  
Antibiotic Prescribing ◽  
Successful Implementation ◽  
Pharmacist Interventions ◽  
Outpatient Settings ◽  
The Impact

Abstract Disclaimer In an effort to expedite the publication of articles related to the COVID-19 pandemic, AJHP is posting these manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. Purpose To provide an overview of the impact of pharmacist interventions on antibiotic prescribing and the resultant clinical outcomes in an outpatient antibiotic stewardship program (ASP) in the United States. Methods Reports on studies of pharmacist-led ASP interventions implemented in US outpatient settings published from January 2000 to November 2020 and indexed in PubMed or Google Scholar were included. Additionally, studies documented at the ClinicalTrials.gov website were evaluated. Study selection was based on predetermined inclusion criteria; only randomized controlled trials, observational studies, nonrandomized controlled trials, and case-control studies conducted in outpatient settings in the United States were included. The primary outcome was the observed differences in antibiotic prescribing or clinical benefits between pharmacist-led ASP interventions and usual care. Results Of the 196 studies retrieved for full-text review, a cumulative total of 15 studies were included for final evaluation. Upon analysis, we observed that there was no consistent methodology in the implementation of ASPs and, in most cases, the outcome of interest varied. Nonetheless, there was a trend toward improvement in antibiotic prescribing with pharmacist interventions in ASPs compared with that under usual care (P &lt; 0.05). However, the results of these studies are not easily generalizable. Conclusion Our findings suggest a need for a consistent approach for the practical application of outpatient pharmacist-led ASPs. Managed care organizations could play a significant role in ensuring the successful implementation of pharmacist-led ASPs in outpatient settings.

scholarly journals 1686. Microbiology of Community-Onset Urinary Tract Infections in the United States, 2012-2017

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S826-S827
Author(s):  
Leigh Ellyn Preston ◽  
Clifford McDonald ◽  
Babatunde Olubajo ◽  
Natalie McCarthy ◽  
Sujan Reddy ◽  
...  
Keyword(s):  
United States ◽  
Antibiotic Resistance ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Relative Frequency ◽  
The United States ◽  
Antibiotic Prescribing ◽  
Factors Associated ◽  
Tract Infections ◽  
Community Onset

Abstract Background Community-onset urinary tract infections (coUTIs) are one of the most common indications for antibiotic prescribing. It is important to understand patient demographic factors associated with microorganisms causing coUTI and their antibiotic resistance profiles, to tailor antibiotic prescribing practices. We analyzed microbiology data to understand factors associated with coUTI in the United States (US). Methods CoUTIs were identified in the Premier Healthcare Database and Cerner Health Facts among patients treated at participating healthcare facilities in the US between 2012-2017. Cases were defined by urine cultures yielding a bacterial organism and were collected in outpatient settings or within three days of hospitalization. Only the first specimen for each encounter was included in the analysis. Data on the organisms isolated, patient’s age, sex, and US census regions of the submitting facilities were described and compared using chi-square tests for associations. Encounters were classified as inpatient (INPT), observation (OBS), emergency department (ED), and outpatient (OTPT) based on the setting in which the culture was submitted. Results Using data from 637 acute care hospitals, urine samples from 3,291,561 encounters were included, with 776,653 (25.7%) INPT, 1,063,219 (34.8%) ED, 107,760 (3.5%) OBS, and 1,092,658 (35.8%) OTPT. The pathogens most frequently associated with coUTIs were Escherichia coli (57.3%), Klebsiella pneumoniae (9.7%), Enterococcus faecalis (5.1%), Proteus mirabilis (4.9%), and Pseudomonas aeruginosa (2.9%). Female sex, age &lt; 65y and OTPT and ED settings were associated with higher relative frequency of E. coli (all p &lt; 0.0001). Male sex, INPT setting and age &gt;65 y were associated with higher relative frequency of P. aeruginosa, P. mirabilis and E. faecalis (all p &lt; 0.0001, Figure). K. pneumoniae was found at higher relative frequency in those &gt;45y, and in INPT and OBS settings (all p &lt; 0.0001). Figure. Distribution of pathogens most frequently associated with community onset urinary tract infections Conclusion Understanding patient factors associated with the microbiology of coUTIs is an important step in developing treatment recommendations and antibiotic stewardship efforts. Further analyses will include assessing the impact of major antibiotic resistance phenotypes, geographic and healthcare settings. Disclosures All Authors: No reported disclosures

scholarly journals Influenza vaccination campaigns targeted at healthcare workers:results of four hospitals in Rome

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
A Tognetto ◽  
A Abbondanzieri ◽  
G Cerone ◽  
M Di Pumpo ◽  
A Nardi ◽  
...  
Keyword(s):  
Public Health ◽  
Influenza Vaccination ◽  
Vaccination Coverage ◽  
Seasonal Influenza ◽  
Teaching Hospitals ◽  
Easy Access ◽  
Cross Sectional ◽  
Seasonal Influenza Vaccination ◽  
Coverage Rates ◽  
Vaccination Campaigns

Abstract Background Seasonal influenza vaccination (SIV) of health care workers (HCWs) is well recognized as a public health measure that can protect both HCWs from infection and patients from the risk of influenza complications. Nevertheless, vaccination coverage rates among this specific population result generally lower than the recommended target. With our study, we aimed to describe the activities and the outcomes of four different SIV campaigns targeted at HCWs and organized during the season 2018/2019 in four hospitals in Rome. Methods A cross-sectional study involving four teaching hospitals was performed. The collected data were synthetized into a set of descriptors and indicators, validated through a previous study that had involved the same Centers. Results The Medical Directorates, in collaboration with the University Hygiene and Public Health Units of the four hospitals organized different strategies: Hospital 1, 3 and 4 realized educational courses for HCWs and actively promoted the campaigns through e-mail invitations to all HCWs. As for the access to vaccination, all the hospitals provided a dedicated unit for SIV; Hospital 1 and Hospital 4 organized also on-site vaccination sessions in the hospital wards, that required a large number of staff. The vaccination coverage rates resulted: 22.37% in Hospital 1, 18.10% in Hospital 4, 9.28% in Hospital 2 and 8,51% in Hospital 3. Conclusions Our results demonstrate that multi-activity campaigns, involving education, promotion and easy access to vaccination constitute an effective approach to reinforce the value of SIV. Our findings suggest that on-site vaccination may play a key role in determining a higher vaccination coverage. Key messages Multi-activity vaccination campaigns, involving education, promotion and easy access to vaccination constitute an effective approach to reinforce the value of seasonal influenza vaccination for HCWs. On-site vaccination may play a key role in determining a higher vaccination coverage.

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