Carbapenem-resistant Pseudomonas aeruginosa strains: a worrying health problem in intensive care units.

Pseudomonas aeruginosa is one of the most common bacterium with a broad spectrum of human-associated infections. It is intrinsically resistant to many antimicrobial drugs, making carbapenems crucial in clinical management. The emergence and dissemination of carbapenemases among P. aeruginosa clinical isolates is a serious public health concern as it limits the options for the treatment of bacterial infections. Here, we described the molecular and epidemiological characteristics of 28 carbapenem-resistant P. aeruginosa strains isolated from patients hospitalized in an intensive care unit (ICU). The antimicrobial susceptibility of carbapenem-resistant P. aeruginosa strains was determined by broth microdilution. The presence of resistance genes was evaluated by PCR and DNA sequencing. Additionally, alterations in genes encoding P. aeruginosa outer membrane proteins were analyzed by PCR as well as SDS-PAGE. Clinical characteristics of the patients and the economic impact of hospitalization on the public health system were evaluated. PCR amplification showed that the blaKPC-2 and blaTEM genes were identified in three isolates (11%) and blaSHV gene in two isolates (7%). Outer membrane profiles obtained by SDS-PAGE indicated that the OprD porin was either absent or was produced at very low levels. A PCR assay using oprD-specific primers failed to show the presence of mutations in this gene. P. aeruginosa strains were isolated from 28 patients, among whom 43% (12/28) had sepsis, 31% (9/28) had respiratory failure, and 31% (9/28) had systemic arterial hypertension. A high mortality rate (39%) was observed in these patients, with an average duration of hospitalization of 34.6 days and a median cost of 3.275 dollars per patient. The production of carbapenemase was not the main mechanism of resistance in these strains. All carbapenem-resistant P. aeruginosa were isolated from patients hospitalized in the ICU. Besides the high mortality rate, many patients remained hospitalized for several days, resulting in a high cost of hospitalization for the public health system. Therefore, the evolution of this resistance and its dissemination should be actively monitored among critically ill patients to improve their health conditions.

Descriptive analysis of syphilis cases reported in Mato Grosso do Sul, Brazil identifies failure in treatment.

INTRODUCTION: Syphilis infection remains an alarming public health problem worldwide. METHODS: This study analyzed syphilis cases listed in the Information System on Diseases of Compulsory Declaration (SINAN) of Mato Grosso do Sul state in Brazil between January 2013 and December 2014. RESULTS: Most of the evaluated syphilis cases would have been preventable through public education, particularly congenital syphilis in children of previously diagnosed mothers and infection by untreated sexual partners. CONCLUSIONS: The incidence rate of syphilis could be reduced by improving prevention through counselling on the risk of infection, improving access to condoms, and increasing the frequency of diagnostic tests.

Descriptive analysis of syphilis cases reported in Mato Grosso do Sul, Brazil identifies failure in treatment

Abstract INTRODUCTION: Syphilis infection remains an alarming public health problem worldwide. METHODS: This study analyzed syphilis cases listed in the Information System on Diseases of Compulsory Declaration (SINAN) of Mato Grosso do Sul state in Brazil between January 2013 and December 2014. RESULTS: Most of the evaluated syphilis cases would have been preventable through public education, particularly congenital syphilis in children of previously diagnosed mothers and infection by untreated sexual partners. CONCLUSIONS: The incidence rate of syphilis could be reduced by improving prevention through counselling on the risk of infection, improving access to condoms, and increasing the frequency of diagnostic tests.

Treatment Outcomes of Brazilian Inmates with Treponema pallidum and Human Immunodeficiency Virus Infection: A Prospective Cohort Study.

A prospective cohort study was conducted to evaluate the incidence and treatment outcomes of syphilis and human immunodeficiency virus (HIV) in inmates from Central Brazil. In 2013, 3,363 inmates from 12 prisons in the state of Mato Grosso do Sul were recruited, and 1,614 remained incarcerated after 1 year. The inmates were interviewed, and blood samples were collected for serological testing for Treponema pallidum and HIV infections. Inmates infected with T. pallidum or HIV within the first year were assessed for treatment using prison medical record data, based on Venereal Disease Research Laboratory test results, HIV-1 viral load, and CD4 counts. Acquired syphilis was identified in 5.8% (N = 95) of the inmates and 74% (N = 70) of them demonstrated poor treatment outcomes after 1 year. Multivariate analysis revealed that not reporting a stable partner was a risk factor for failure of syphilis treatment. Twenty-five patients had HIV (1.5%) and among those, 13 (52%) had an HIV-1 viral load > 200 copies/mL after 1 year. The incidence of T. pallidum and HIV infections was 0.5% (N = 9). The poor treatment outcomes of syphilis and HIV within Brazilian prisons demonstrate the inadequacy of public health programs. Although the incidence of these infections within the prison population is low, new cases still occur. Our results reinforce the significance of screening programs during prison admission for early detection and treatment of sexually transmitted infections.

High mortality rate associated with KPC-producing Enterobacter cloacae in a Brazilian hospital.

We describe a clonal dissemination of KPC-producing Enterobacter cloacae in a Brazilian hospital. Patients diagnosed with theses isolates showed high mortality rate (41.8%) and were associated with previous use of antibiotics and urinary catheterization. Therefore, infection control measures and use of stricter antibiotic policies are required to control the spread of these organisms.

Identification of São Paulo metallo-beta-lactamase-1-producing Pseudomonas aeruginosa in the Central-West region of Brazil: a case study.

Metallo-beta-lactamase production is an important mechanism for carbapenem resistance of Pseudomonas aeruginosa , which represents an emerging public health challenge. We report the case of a patient admitted to an intensive care unit, with sepsis caused by multidrug-resistant São Paulo Metallo-beta-lactamase-1-producing P. aeruginosa . This is the first case of infection by this pathogenic strain in the State of Mato Grosso do Sul, Brazil. Thus, infection control measures are required for preventing future spread and outbreaks.

Identification of São Paulo metallo-beta-lactamase-1-producing Pseudomonas aeruginosa in the Central-West region of Brazil: a case study

Abstract: Metallo-beta-lactamase production is an important mechanism for carbapenem resistance of Pseudomonas aeruginosa , which represents an emerging public health challenge. We report the case of a patient admitted to an intensive care unit, with sepsis caused by multidrug-resistant São Paulo Metallo-beta-lactamase-1-producing P. aeruginosa . This is the first case of infection by this pathogenic strain in the State of Mato Grosso do Sul, Brazil. Thus, infection control measures are required for preventing future spread and outbreaks.