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BACKGROUND: Immunosuppressive agents may increase the risk of infections with human alphaherpesviruses. METHODS: We included all adult patients with moderate to severe psoriasis who initiated methotrexate (MTX) or biologic agents in a retrospective cohort study. An episode of alphaherpesviruses infection was defined as filling a prescription for systemic acyclovir, valacyclovir, or famciclovir. Using nationwide registries, we determined the incidence, risk factors, 180-day hospital contacts, and 30-day mortality following infection. RESULTS: We included 7294 patients; 4978 (68%) received MTX, and 2316 (32%) biologic agents. The incidence rates (95% confidence intervals) of alphaherpesviruses were 23 (20-27), 26 (19-35), 17 (11-27), and 6.7 (1.3-21) per 1000 person-years of follow-up in patients on MTX, tumor necrosis factor alpha (TNF-α) inhibitors, interleukin 12/23 (IL-12/23) inhibitors, and interleukin 17 (IL-17) inhibitors, respectively. Males had an unadjusted hazard ratio (HR) of 0.47 (P < .001) for alphaherpesvirus infection. Patients on IL-17 inhibitors had an adjusted HR of 0.24 (P = .048) compared to TNF-α inhibitors. Within 180 days after infection, 13%, 7.5%, and <0.5% of patients on MTX, TNF-α inhibitors, and IL-12/23 or IL-17 inhibitors, respectively, had hospital contacts, and the 30-day mortality for all groups was <0.5%. CONCLUSIONS: The incidence and risk of alphaherpesvirus infections were comparable between patients on MTX and TNF-α inhibitors, whereas use of IL-17 inhibitors was associated with a lower risk.
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Metotrexato , Psoríase , Masculino , Adulto , Humanos , Metotrexato/efeitos adversos , Incidência , Fatores Biológicos , Interleucina-17 , Fator de Necrose Tumoral alfa , Estudos Retrospectivos , Fatores de Risco , Fatores Imunológicos , Interleucina-12RESUMO
Coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 has been associated with a high risk of adverse outcomes in solid organ transplant (SOT) recipients in the pre-vaccination era. In this retrospective cohort study, we examined the incidence and severity of COVID-19 in kidney and liver transplant recipients in Denmark in the post-vaccination era, from December 27, 2020, to December 27, 2021. We included 1428 SOT recipients with 143 cases of first-positive SARS-CoV-2 PCR test. The cumulative incidence of first-positive SARS-CoV-2 PCR test 1 year after initiation of vaccination was 10.4% (95% CI: 8.8-12.0), and the incidence was higher in kidney than in liver transplant recipients (11.6% [95% CI: 9.4-13.8] vs. 7.4% [95% CI: 5.1-9.8], p = .009). After the first-positive SARS-CoV-2 PCR test, the hospitalization rate was 31.5% (95% CI: 23.9-39.1), and 30-day all-cause mortality was 3.7% (95% CI: 0.5-6.8). Hospitalization was lower in vaccinated than in unvaccinated SOT recipients (26.4% [95% CI: 18.1-34.6] vs. 48.5% [95% CI: 31.4-65.5], p = .011), as was mortality (1.8% [95% CI: 0.0-4.3] vs. 9.1% [95% CI: 0.0-18.9], p = .047). In conclusion, SOT recipients remain at high risk of adverse outcomes after SARS-CoV-2 infections, with a lower risk observed in vaccinated than in unvaccinated SOT recipients.
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COVID-19 , Transplante de Rim , Transplante de Órgãos , Humanos , COVID-19/epidemiologia , SARS-CoV-2 , Incidência , Estudos Retrospectivos , Transplante de Rim/efeitos adversos , Transplante de Órgãos/efeitos adversos , Transplantados , Vacinação , Fígado , Dinamarca/epidemiologiaRESUMO
Routine monitoring of parvovirus B19 (B19V) the first 6 months posttransplantation was performed in 241 seronegative solid organ transplant (SOT) recipients. Incidence rates during the first month and the second to sixth months posttransplantation were 1.2 (95% confidence interval [CI], .33-3.2) and 0.21 (95% CI, .06-.57) per 100 recipients per month, respectively. Of the 6 SOT recipients with positive B19V polymerase chain reaction, 3 (50%) were admitted to hospital and 2 (33%) were treated with intravenous immunoglobulin. Thus, routine monitoring of B19V in seronegative SOT recipients may not be necessary. Targeted screening 1 month posttransplantation and screening upon clinical suspicion could be an alternative strategy.
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Hospedeiro Imunocomprometido , Transplante de Órgãos , Infecções por Parvoviridae/complicações , Infecções por Parvoviridae/epidemiologia , Parvovirus B19 Humano/isolamento & purificação , Adulto , Estudos de Coortes , DNA Viral/sangue , Eritema Infeccioso/complicações , Eritema Infeccioso/diagnóstico , Eritema Infeccioso/epidemiologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Transplante de Órgãos/efeitos adversos , Infecções por Parvoviridae/diagnóstico , Parvovirus B19 Humano/genética , Reação em Cadeia da Polimerase , Estudos Prospectivos , Análise de Sequência de DNA , TransplantesRESUMO
BACKGROUND: Mumps, measles, rubella, and varicella zoster (MMRV) viruses may cause severe infections in seronegative adult solid organ transplant (SOT) recipients, but can be prevented by vaccination. We aimed to determine MMRV serostatus in adult SOT recipients before and 1 year after transplantation as well as evidence of MMRV infections in a large, prospective cohort of SOT recipients. METHODS: This was a prospective study of 1182 adult SOT recipients included in the Management of Posttransplant Infections in Collaborating Hospitals (MATCH) cohort from 2011 to 2017 with a 1-year follow-up. Systematic monitoring of MMRV serology was performed prior to transplantation and 1 year posttransplantation. Polymerase chain reaction (PCR) was used to confirm viral replication in SOT recipients presenting with clinical evidence of infection. RESULTS: Among 1182 adult SOT recipients, 28 (2.4%), 77 (6.5%), 65 (5.5%), and 22 (1.9%) were seronegative for measles, mumps, rubella, and varicella zoster virus (VZV), respectively, and 165 (14%) were seronegative for at least 1 of the MMRV viruses. One year posttransplantation, 29 of 823 (3.5%) of seropositive SOT recipients had seroreverted, and 63 of 111 (57%) of seronegative SOT recipients seroconverted for at least 1 MMRV virus. No evidence of measles, mumps, or rubella infection was found, but 8 (0.7%) SOT recipients developed symptoms and had a positive VZV PCR. CONCLUSIONS: A large proportion of SOT recipients were seronegative for at least 1 of the MMRV viruses. MMRV infections in SOT recipients may disseminate and become fatal, and although only a few cases of VZV infection were detected, results from this study suggest increase attention toward vaccination of patients waiting for SOT.
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Varicela , Sarampo , Caxumba , Transplante de Órgãos , Rubéola (Sarampo Alemão) , Anticorpos Antivirais , Vacina contra Varicela , Herpesvirus Humano 3 , Humanos , Sarampo/prevenção & controle , Vacina contra Sarampo-Caxumba-Rubéola , Caxumba/epidemiologia , Transplante de Órgãos/efeitos adversos , Estudos Prospectivos , Rubéola (Sarampo Alemão)/epidemiologia , Vacinas CombinadasRESUMO
BACKGROUND: Bacterial and fungal bloodstream infections (BSI) are common after pediatric liver and kidney transplantations and associated with morbidity and mortality. However, knowledge about incidence rates, pathogen composition, and resistance patterns is limited. We aimed to describe the pattern of bacterial and fungal BSI in a cohort of pediatric liver and kidney transplant recipients. METHODS: A prospective study of 85 pediatric liver and kidney transplant recipients transplanted from 2010 to 2017 with a total of 390 person-years of follow-up. Clinical characteristics and BSI were retrieved from national registries assuring nationwide follow-up for at least 1 year. BSI incidence rates and pathogen composition were investigated and stratified by the time post-transplantation and type of transplanted organ. RESULTS: A total of 29 BSI were observed within the first 5 years post-transplantation with 16 different pathogens. The overall incidence rate of first BSI was 1.91 per 100 recipients per month (95% CI, 1.1-3.1) in the first year post-transplantation. The most common pathogens were Enterococcus faecium, Candida albicans, Escherichia coli, and Klebsiella pneumoniae. The pathogen composition depended on the transplanted organ with a higher proportion of BSI with Enterobacterales in kidney transplant recipients than in liver transplant recipients (67% vs. 20%, p = 0.03), while multiple pathogens were detected in the liver transplant recipients. CONCLUSIONS: BSI were common in pediatric liver and kidney transplant recipients and the pathogen composition differed between liver and kidney transplant recipients. Guidelines for empiric antibiotic therapy should consider the type of transplanted organ as well as the local resistance patterns.
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Bacteriemia/microbiologia , Fungemia/microbiologia , Transplante de Rim/efeitos adversos , Transplante de Fígado/efeitos adversos , Adolescente , Anti-Infecciosos/uso terapêutico , Bacteriemia/tratamento farmacológico , Bacteriemia/epidemiologia , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Fungemia/tratamento farmacológico , Fungemia/epidemiologia , Humanos , Incidência , Lactente , Transplante de Rim/estatística & dados numéricos , Transplante de Fígado/estatística & dados numéricos , Masculino , Estudos Prospectivos , Fatores de Risco , TransplantadosAssuntos
COVID-19 , Influenza Humana , Infecções por Vírus Respiratório Sincicial , SARS-CoV-2 , Humanos , COVID-19/epidemiologia , COVID-19/virologia , SARS-CoV-2/genética , Influenza Humana/virologia , Influenza Humana/epidemiologia , Infecções por Vírus Respiratório Sincicial/virologia , Infecções por Vírus Respiratório Sincicial/epidemiologia , Vírus Sincicial Respiratório Humano/genética , Vírus Sincicial Respiratório Humano/isolamento & purificação , Coinfecção/virologiaRESUMO
BACKGROUND: Solid organ transplantation (SOT) is a well-established and life-saving treatment for patients with end-stage organ failure. Organ rejection and infections are among the main complications to SOT and largely determines the clinical outcome. The correct level of immunosuppression is of major importance to prevent these complications. However, it is a consistent observation that in recipients on the same immunosuppressive regimens the clinical outcome varies, and no reliable marker exists to monitor immune function. METHODS: In a prospective, observational study, we plan to enroll 630 adult patients with a planned organ transplantation at Rigshospitalet, University of Copenhagen, Denmark. Prior to and on different time points up to two years after transplantation we will perform a complete immunological profile on the recipients. This profile will consist of classical descriptive immune phenotyping (flow cytometry and circulating biomarkers) and the functional assay TruCulture®. In TruCulture® whole blood is incubated ex vivo with stimulants imitating bacterial, viral and fungal infections, where after a panel of selected cytokines is quantified. Clinical data from electronic health records will be obtained from the PERSIMUNE (Centre of Excellence for Personalized Medicine of Infections Complications in Immune Deficiency at Rigshospitalet, Copenhagen) data repository, a warehouse of data generated as part of routine care including vital signs, biochemistry, microbiology, pathology as well as medication, demographics, diagnoses, hospital contacts, surgical procedures and mortality. DISCUSSION: This will be the first large scale study to determine several aspects of immune function and perform a complete immunological profiling in SOT recipients. It is expected that knowledge generated will provide information to generate prediction models identifying patients at increased risk of infection and/or rejection. If the study is successful, we will subsequently use the generated prediction models to propose personalized immunosuppressive regimens to be tested in future randomized controlled trials. TRIAL REGISTRATION: This study has been approved by the Regional ethical committee (H-17024315), the Danish Data Protection Agency (RH-2016-47, RH-2015-04, I-Suite 03605) and the Danish National board of Health (3-3013-1060/1). The trial is retrospectively registered at clinicaltrials.gov ( NCT03847285 ) the 20th February 2019.
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Infecções/etiologia , Transplante de Órgãos/efeitos adversos , Transplante de Órgãos/métodos , Adulto , Biomarcadores/sangue , Citocinas/sangue , Humanos , Tolerância Imunológica , Terapia de Imunossupressão , Imunossupressores/uso terapêutico , Estudos Observacionais como Assunto , Estudos ProspectivosRESUMO
(1) Background: We aim to systematically review the current evidence on immunity against tetanus, diphtheria, and pertussis in adult solid organ transplantation (SOT) recipients, either through natural infection or vaccination. (2) Methods: This systematic review was conducted per PRISMA guidelines. We assessed the risk of bias using the Cochrane RoB 2 and ROBINS-I and summarized the findings narratively due to the heterogeneity of the studies. (3) Results: Of the 315 screened articles, 11 were included. Tetanus immunity varied between 55% and 86%, diphtheria immunity from 23% to 75%, and pertussis immunity was between 46% and 82%. Post-vaccination immunity showed variation across the studies, with some indicating reductions and others no change, with antibody responses influenced by transplanted organs, gender, age, and immunosuppressive regimens. The single randomized study exhibited a low risk of bias, while of the ten non-randomized studies, six showed moderate and four serious risks of bias, necessitating cautious interpretation of results. (4) Conclusions: SOT recipients exhibit considerable immunity against tetanus and diphtheria at transplantation, but this immunity decreases over time. Although vaccination can enhance this immunity, the response may be suboptimal, and the increased antibody levels may not persist, underscoring the need for tailored vaccination strategies in this vulnerable population.
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Information about anemia in liver transplant (LTx) recipients is scarce. We investigated the prevalence and severity of anemia before and within the first-year post-LTx, risk factors for having anemia before LTx, and 1-year survival according to anemia status before LTx. This retrospective cohort study received data from The Knowledge Center for Transplantation database at Rigshospitalet, Copenhagen, Denmark. Uni- and multivariate logistic regression were used to investigate factors associated with anemia and a Kaplan-Meier plot to illustrate the probability of survival. We included 346 first-time adult LTx recipients. The median age was 50 years (IQR: 42-57), and 203 (59%) were male. The prevalence of anemia before and 1-year post-LTx were 69 and 45%, respectively. Male sex (aOR 4.0 [95% CI: 2.2-7.2]; p < 0.001) and each unit increase in MELD score (aOR 1.2 [95% CI: 1.1-1.2]; p < 0.001) were positively associated with anemia before LTx. Compared to autoimmune liver diseases, LTx recipients with fulminant hepatic failure (aOR 0.03 [0.00-0.17]; p = 0.001) had lower odds for anemia. The 1-year survival in LTx recipients who had and did not have anemia before transplantation were 93 and 91% (p = 0.47). Anemia was frequent among LTx recipients, and anemia before LTx did not affect 1-year survival.
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Transplante de Fígado , Adulto , Humanos , Masculino , Pessoa de Meia-Idade , Feminino , Transplante de Fígado/efeitos adversos , Estudos Retrospectivos , Prevalência , Fígado , Fatores de RiscoRESUMO
Anti-SARS-CoV-2 vaccination has saved millions of lives in the past few years. To maintain a high level of protection, particularly in at-risk populations, booster doses are recommended to counter the waning of circulating antibody levels over time and the continuous emergence of immune escape variants of concern (VOCs). As anti-spike serology is now widely available, it may be considered a useful tool to identify individuals needing an additional vaccine dose, i.e., to screen certain populations to identify those whose plasma antibody levels are too low to provide protection. However, no recommendations are currently available on this topic. We reviewed the relevant supporting and opposing arguments, including areas of uncertainty, and concluded that in most populations, spike serology should not be used to decide about the administration of a booster dose. The main counterarguments are as follows: correlates of protection are imperfectly characterised, essentially owing to the emergence of VOCs; spike serology has an intrinsic inability to comprehensively reflect the whole immune memory; and booster vaccines are now VOC-adapted, while the commonly available commercial serological assays explore antibodies against the original virus.
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BACKGROUND: Pneumonia is one of the main contributors to non-cancer mortality among patients with head and neck cancer (HNC). This study aimed to determine the vaccine uptake for pneumococcal polysaccharide and conjugate vaccines, quadrivalent influenza vaccines, and mRNA COVID-19 vaccines before and after an HNC diagnosis. Furthermore, the study investigated the timing of vaccination after a cancer diagnosis. MATERIALS & METHODS: This register based multicentre study included Danish patients ≥ 18y diagnosed with HNC between 2018 and 2021. The vaccine uptake was assessed by calculating cumulative incidence (CI), while the timing of vaccination after an HNC diagnosis was explored by calculating incidence rates of vaccination the first and second half year after a cancer diagnosis. RESULTS: The cumulative incidence of vaccine uptake for pneumococcal vaccines was estimated to be 8 % and 16 % one year before and after an HNC diagnosis, respectively. The CIs were 36 % and 38 % for quadrivalent influenza vaccines, respectively, whereas the CIs of vaccine uptake for mRNA COVID-19 vaccines were 60 % and 89 %. The IR of mRNA COVID-19 vaccinations the first half year after HNC diagnosis were 273 per 1000 person-months of follow-up (PMFU) and 111 per 1000 PMFU the second half year, respectively (IRR: 0.38, p < 0.001). Comparing the same periods, the IR of quadrivalent influenza vaccination was 28 per 1000 PMFU and 51 per 1000 PMFU (IRR: 1.95, 0 < 0.001). The IRs of pneumococcal vaccinations were 11 per 1000 PMFU and 14 per 1000 PMFU (IRR 1.28, p = 0.21). CONCLUSIONS: Although our study shows a significant increase in pneumococcal and COVID-19 vaccine uptake after HNC diagnosis, a gap remains in vaccine uptake before diagnosis, underscoring the need for increased awareness of vaccination options and recommendations. Our findings could serve as a reference for future recommendations.
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Vacinas contra COVID-19 , COVID-19 , Neoplasias de Cabeça e Pescoço , Vacinas contra Influenza , Influenza Humana , Vacinas Pneumocócicas , Vacinação , Humanos , COVID-19/prevenção & controle , COVID-19/diagnóstico , Feminino , Masculino , Vacinas Pneumocócicas/administração & dosagem , Vacinas Pneumocócicas/imunologia , Pessoa de Meia-Idade , Vacinas contra Influenza/administração & dosagem , Vacinas contra Influenza/imunologia , Influenza Humana/prevenção & controle , Influenza Humana/diagnóstico , Idoso , Neoplasias de Cabeça e Pescoço/diagnóstico , Vacinação/estatística & dados numéricos , Vacinas contra COVID-19/administração & dosagem , Vacinas contra COVID-19/imunologia , Infecções Pneumocócicas/prevenção & controle , Infecções Pneumocócicas/diagnóstico , Adulto , Dinamarca/epidemiologia , SARS-CoV-2/imunologia , Idoso de 80 Anos ou mais , Cobertura Vacinal/estatística & dados numéricos , Vacinas Conjugadas/administração & dosagem , Vacinas Conjugadas/imunologia , Incidência , Adulto JovemRESUMO
Introduction: Herpes virus infections are a major concern after solid organ transplantation and linked to the immune function of the recipient. We aimed to determine the incidence of positive herpes virus (cytomegalovirus (CMV), Epstein-Barr virus (EBV), herpes simplex virus type 1/2 (HSV-1/2), and varicella zoster virus (VZV)) PCR tests during the first year post-transplantation and assess whether a model including immune function pre-transplantation and three months post-transplantation could predict a subsequent positive herpes virus PCR. Methods: All participants were preemptively screened for CMV, and EBV IgG-negative participants were screened for EBV during the first year post-transplantation. Herpes virus PCR tests for all included herpes viruses (CMV, EBV, HSV-1/2, and VZV) were retrieved from the Danish Microbiology database containing nationwide PCR results from both hospitals and outpatient clinics. Immune function was assessed by whole blood stimulation with A) LPS, B) R848, C) Poly I:C, and D) a blank control. Cytokine concentrations (TNF-α, IL-1ß, IL-6, IL-8, IL-10, IL-12p40, IL-17A, IFN-α, and IFN-γ) were measured using Luminex. Results: We included 123 liver (54%), kidney (26%), and lung (20%) transplant recipients. The cumulative incidence of positive herpes virus PCR tests was 36.6% (95% CI: 28.1-45.1) during the first year post-transplantation. The final prediction model included recipient age, type of transplantation, CMV serostatus, and change in Poly I:C-induced IL-12p40 from pre-transplantation to three months post-transplantation. The prediction model had an AUC of 77% (95% CI: 61-92). Risk scores were extracted from the prediction model, and the participants were divided into three risk groups. Participants with a risk score <5 (28% of the cohort), 5-10 (45% of the cohort), and >10 (27% of the cohort) had a cumulative incidence of having a positive herpes virus PCR test at 5.8%, 25%, and 73%, respectively (p < 0.001). Conclusion: In conclusion, the incidence of positive herpes virus PCR tests was high, and a risk model including immune function allowed the prediction of positive herpes virus PCR and may be used to identify recipients at higher risk.
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Infecções por Citomegalovirus , Infecções por Vírus Epstein-Barr , Infecções por Herpesviridae , Transplante de Órgãos , Humanos , Lactente , Estudos Prospectivos , Subunidade p40 da Interleucina-12 , Infecções por Vírus Epstein-Barr/diagnóstico , Infecções por Vírus Epstein-Barr/epidemiologia , Herpesvirus Humano 4 , Infecções por Herpesviridae/diagnóstico , Infecções por Herpesviridae/epidemiologia , Transplante de Órgãos/efeitos adversos , Citomegalovirus , Herpesvirus Humano 3 , Herpesvirus Humano 2 , Infecções por Citomegalovirus/epidemiologia , Imunidade , Poli IRESUMO
Vaccination is an evidence-based strategy to prevent or reduce the severity of infectious diseases (ID). Here, we aimed to describe the experience of implementing a vaccination clinic specifically targeting liver, heart, lung, and combined dual organ transplantation at a single transplantation center in Denmark. In this cohort of 242 solid organ transplant (SOT) candidates, we investigated seroprotection and the proportion of recommended vaccinations documented before transplantation. Furthermore, we registered completed vaccinations after ID consultations. The median age in our cohort was 53 years (IQR, 42-60), 60% were males (n = 135), and liver transplants (n = 138; 57%) were the most frequently planned organ transplants. Before the consultation to the vaccination clinic, influenza and pneumococcal vaccines had the highest proportion of documented vaccination (58% and 37%, respectively). Serological protection was more frequently observed for measles, mumps, or rubella (MMR, approximately 90% for each), while only 30% (n = 72) of SOT candidates showed seroprotection against pneumococcal disease. All SOT candidates required at least one of the recommended vaccines, and over 90% required three or more. At least 10% of patients in our cohort needed a live attenuated vaccine for either MMR or yellow fever. The most frequently administered vaccine was the tetanus-diphtheria-acelullar pertussis (Tdap) booster (n = 217; 90%), influenza vaccination was either administered (n = 16; 7%) or recommended (n = 226; 93%), PCV13 was administered (n = 155; 64%) or recommended (n = 27; 11%), and PPSV23 was either administered (n = 18; 7.4%) or recommended (n = 140; 58%). All SOT candidates adhered completely to their vaccination schedules. Based on our findings, we recommend prioritizing vaccination before transplantation by providing ID consultations for SOT candidates.
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Doenças Transmissíveis , Influenza Humana , Transplante de Órgãos , Rubéola (Sarampo Alemão) , Masculino , Humanos , Adulto , Pessoa de Meia-Idade , Feminino , Rubéola (Sarampo Alemão)/prevenção & controle , Vacinação , Vacinas AtenuadasRESUMO
Before introducing combination antiretroviral therapy (cART), a higher prevalence of emphysema in people living with HIV (PLWH) than in the background population was reported. This systematic literature review aimed to investigate the prevalence of emphysema in PLWH and to compare the prevalence between PLWH and controls in the current cART era. A systematic literature search was conducted in PubMed, EMBASE, Scopus, and Web of Science (WOS), searching for "human immunodeficiency virus (HIV)" and "emphysema" from January 1, 2000 to March 10, 2021. Eligible studies were published after the introduction of cART, included PLWH, and reported the prevalence of emphysema. A total of 17 studies were included, and nine studies also included controls. The weighted average prevalence of emphysema in PLWH was 23% (95% CI: 16-30). In studies including both PLWH and controls the weighted average prevalence were 22% (95% CI: 10-33) and 9.7% (95% CI: 2.3-17), respectively (p = 0.052). The prevalence of emphysema in never-smoking PLWH and controls was just reported in one study and was 18 and 4%, respectively (p < 0.01). Thirteen of the studies had a moderate risk of bias, mainly due to selection of patients. A tendency to higher prevalence of emphysema was found in PLWH in comparison to controls in the current cART era. However, in the included studies, the definition of emphysema varied largely. Thus, to have a clear overview of the prevalence, further studies with well-designed cohorts of PLWH and controls are warranted.
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INTRODUCTION: Streptococcus pneumoniae is the most frequent cause of overwhelming post-splenectomy infections. Pneumococcal vaccination is generally recommended for splenectomized individuals. However, most of our knowledge comes from a few observational studies or small randomized clinical trials. We conducted this systematic review to assess the evidence of efficacy, antibody response, and the best timing for pneumococcal vaccination in splenectomized individuals. AREAS COVERED: The systematic review was conducted according to the PRISMA guidelines. We screened 489 articles, included 21 articles, and assessed the risk of bias using Cochrane RoB 2 and ROBINS-I. We summarized the findings narratively due to the heterogeneity of the studies. EXPERT OPINION: Splenectomized individuals seem to have adequate antibody responses to pneumococcal vaccines. No differences in antibody responses were observed compared to healthy controls, except in one study. The studies were heterogeneous, and the majority had moderate to high degree of bias. There is a lack of clinical evidence for efficacy and best timing of pneumococcal vaccination in splenectomized individuals. Randomized clinical trials addressing these issues are needed.
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Infecções Pneumocócicas , Adulto , Anticorpos Antibacterianos , Humanos , Infecções Pneumocócicas/prevenção & controle , Vacinas Pneumocócicas , Esplenectomia/efeitos adversos , Streptococcus pneumoniae , Vacinação/efeitos adversosRESUMO
Achromobacter is an opportunistic pathogen that mainly causes chronic lung infections in cystic fibrosis (CF) patients and is associated with increased mortality. Little is known about Achromobacter spp. in the lung transplant recipient (LTXr) population. We aimed at describing rates of Achromobacter spp. infection in LTXr prior to, in relation to, and after transplantation, as well as all-cause mortality proportion in infected and uninfected LTXr. We included 288 adult LTXr who underwent lung transplantation (LTX) between 1 January 2010 and 31 December 2019 in Denmark. Bronchoalveolar lavage was performed at regular intervals starting two weeks after transplantation. Positive cultures of Achromobacter spp. were identified in nationwide microbiology registries, and infections were categorized as persistent or transient, according to the proportion of positive cultures. A total of 11 of the 288 LTXr had transient (n = 7) or persistent (n = 4) Achromobacter spp. infection after LTX; CF was the underlying disease in 9 out of 11 LTXr. Three out of the four patients, with persistent infection after LTX, also had persistent infection before LTX. The cumulative incidence of the first episode of infection one year after LTX was 3.8% (95% CI: 1.6-6.0). The incidence rates of transient and persistent infection in the first year after LTX were 27 (12-53) and 15 (5-37) per 1000 person-years of follow-up, respectively. The all-cause mortality proportion one year after LTX was 27% in the Achromobacter spp. infected patients and 12% in the uninfected patients (p = 0.114). Achromobacter spp. mainly affected LTXr with CF as the underlying disease and was rare in non-CF LTXr. Larger studies are needed to assess long-term outcomes of Achromobacter spp. in LTXr.
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Echinocandins selectively inhibit fungal cell wall synthesis and, therefore, have few side effects. However, there are reports of hemodynamic and cardiac complications. We conducted this study to investigate the effects of caspofungin both on the noninvasive echocardiographic indices of myocardial function and myocardial injury based on serum high-sensitivity cardiac troponin I (hs-cTnI) levels. This study was conducted on patients treated for candidemia. The hs-cTnI level and echocardiographic parameters were measured before and 1 h after the infusion of the induction dose of caspofungin. Data were compared between central and peripheral venous drug administration routes. Fifteen patients were enrolled in the study. There were no significant differences in the echocardiographic parameters between the baseline and post-treatment period. The mean hs-cTnI level exhibited a significant rise following drug administration (0.24 ± 0.2 ng/mL vs 0.32 ± 0.3 ng/mL; p = 0.006). There was also a significant difference concerning the hs-cTnI level between central and peripheral venous drug administration routes (p = 0.034). Due to differences in the hs-cTnI level, it appears that the administration of caspofungin may be associated with myocardial injury. Our findings also showed a higher possibility of cardiotoxicity via the central venous administration route.