Prevalence of molecular and serological tests of the new coronavirus (SARS-CoV-2) in Carlos Chagas laboratory - Sabin group in Cuiabá

SUMMARY BACKGROUND: Coronavirus disease 2019, which is caused by the new severe acute respiratory syndrome coronavirus 2, became a pandemic in 2020 with a mortality rate of 2% and high transmissibility, thus making studies with an epidemiological profile essential. OBJECTIVES: The aim of this study was to characterize the population that performed the severe acute respiratory syndrome coronavirus 2 molecular and serological tests in Carlos Chagas Laboratory - Sabin Group in Cuiabá. METHODS: A retrospective cross-sectional study was carried out with all the samples collected from nasal swab tested by RT-PCR and serological for severe acute respiratory syndrome coronavirus 2 IgM/IgG from the population served between April and December 2020. FINDINGS: In the analysis period, 23,631 PCR-coronavirus disease 2019 examinations were registered. Of this total number of cases, 7,649 (32.37%) tested positive, while 15,982 (66.31%) did not detect viral RNA and 374 of the results as undetermined. The peak of positive RT-PCR performed in July (n=5,878), with 35.65% (n=2,096). A total of 8,884 tests were performed on serological test SOROVID-19, with a peak of 1,169 (57.16%) of the positive tests for severe acute respiratory syndrome coronavirus 2 in July. MAIN CONCLUSIONS: Molecular positivity and serological tests, both peaked in July 2020, were mostly present in women aged 20-59 years, characterizing Cuiabá as the epicenter of the Midwest region in this period due to the high rate of transmissibility of severe acute respiratory syndrome coronavirus 2.

Lentes de contato provocando conjuntivite por Ralstonia Pichettii / Contact lenses causing conjunctivity by Ralstonia Pichettii

Resumo O presente relato apresenta o caso de conjuntivite causada por Ralstonia pichettii em paciente imunocompetente usuária de lente de contato. A bactéria isolada da solução utilizada para desinfecção das lentes R. pichettii não pertente a microbiota humana mas infecta pacientes imunodeprimidos e está presente em soluções aquosas. Não há padronização de sensibilidade para esta bactéria e poucos antibióticos foram testados para bactérias não fermentadoras da glicose. Devido ao reduzido perfil de sensibilidade aos antimicrobianos demonstrado pela R. pichettii, torna-se importante a identificação correta deste agente etiológico em quadros de conjuntivite e ceratites. Este relato de caso ilustra que R. Pickettii é um patógeno mais importante do que se pensava anteriormente.

Abstract The present report reports a case of conjunctivitis caused by Ralstonia pichettii in an immunocompetent patient wearing a contact lens. The bacterium isolated from the solution used to disinfect R. pichettii does not belong to the human microbiota but infects immunodepressed patients and is present in aqueous solutions. There is no standardization of sensitivity for this bacterium and few antibiotics have been tested for non-fermenting glucose bacteria. Due to the reduced antimicrobial sensitivity profile demonstrated by R. pichettii, it is important to correctly identify this etiologic agent in conjunctivitis and keratitis. This case report illustrates that R. Pickettii is a more important pathogen than previously thought.

Avaliação da contaminação microbiana de cateter venoso usados em pacientes hospitalizados / Evaluation of microbial venous catheter contamination used in hospitalized patients

Introdução: as unidades de terapia intensiva frequentemente utilizam dispositivos invasivos, como os cateteres, os quais podem desencadear complicações como infecção e outros efeitos colaterais que são de grande importância na terapia clínica. Além disso, os cateteres venosos utilizados principalmente em unidades de terapia intensiva contribuem para disseminação de infecção hospitalar. Objetivo: avaliar os microrganismos causadores de infecções em ponta de cateter venoso usado nos pacientes hospitalizados na Santa Casa de Misericórdia de Cuiabá-MT. Metodologia: foi realizado um estudo transversal de natureza clínica, incluindo pacientes que tinham cateter venoso e excluídos os pacientes com sonda vesical. Foi utilizada a Técnica Semi quantitativa de Maki para cultivo e após o período de incubação, as placas com crescimento igual ou superior a 15 UFC, foram submetidas à identificação dos microrganismos através de provas bioquímicas. Resultados: foram analisadas 1.577 pontas de cateteres no ano de 2008, destas, 297 (18,8%) estavam infectadas, cujos microrganismos de maior prevalência foram em 46 (15,5%) pontas a presença de Escherichia coli, 59 (19,9%) da Pseudomonas aeruginosa, 43(14,5%) da Klebsiella pneumoniae, 42 (14,1%) de Staphylococcus sp coagulase negativa e 20 (6,7%) amostras apresentavam Staphylococcus aureus, dentre outros. Das 177 amostras de ponta de cateter analisadas em 2015, 45 (25,4%) estavam infectadas. Foram encontrados em 13 pontas (28,9%) a presença da bactéria Staphylococcus sp coagulase negativa e 8 (17,8%) da Pseudomonas aeruginosa, 5 (11,1%) da Klebsiella pneumoniae, 5 (11,1%) de Stenotrophomonas maltophilia, 4 (8,9%) de Acinetobacter baumannii Conclusão: pacientes internados podem ser expostos a cateteres venosos com significativo grau de contaminação microbiana.

Introduction: the intensive care units often use invasive devices such as catheters, which can trigger complications such as, for example, infection, among other side effects which are of great importance in clinical therapy. In addition, venous catheters used primarily in intensive care units contribute to the spread of hospital infections. Objective: to evaluate the microorganisms that cause venous catheter infections used in patients hospitalized at Santa Casa de Misericórdia de Cuiabá-MT. Methodology: a cross-sectional clinical study was carried out, including patients who had a venous catheter and excluded patients with bladder catheters.Maki was used for semi-quantitative technique and growing after the incubation period the plates with growth equal to or greater than 15 UFC/ml were subjected to the identification of microorganisms by biochemical tests. Results: a total of 1,577 catheter tips in 2008, of these, 297 (18.8%) were colonized whose most prevalent microorganisms were at 46 (15.5%) pointed to the presence of Escherichia coli, 59 (19.9%) of Pseudomonas aeruginosa, 43 (14.5%), Klebsiella pneumoniae, 42 (14.1%) of Staphylococcus sp coagulase negative and 20 (6.7%) samples had Staphylococcus aureus, among others. The 177 samples catheter tip analyzed in 2015, 45 (25.4%) were colonized. Found ends 13 (28.9%) the presence of the bacterium Staphylococcus sp negative and coagulase, 8 (17.8%) of Pseudomonas aeruginosa, 5 (11.1%) Klebsiella pneumoniae, 5 (11.1%) of Stenotrophomonas maltophilia, 4 (8.9%) of Acinetobacter baumannii

An outbreak of Streptococcus dysgalactiae subsp equisimilis in a hospital in the south of Brazil

The beta-hemolytic group C streptococci (Lancefield's group) has been considered an emergent human pathogen, showing an important role as an opportunist agent, being responsible for nosocomial infections and outbreaks. This study is reporting the first outbreak of nosocomial infection caused by Streptococcus dysgalactiae subsp. equisimilis in Brazil. From January, 2002, to December, 2004, S. equisimilis was isolated in 67/207 (32.37 percent) samples from secretions of patients' infected wounds, interned at the Hospital of Sanitary Dermatology in the State of Paraná (HDSPR). The prevalence of this microorganism increased from 11/42 (26.19 percent) in 2002, 14/65 (21.54 percent) in 2003 to 42/100 (42.00 percent) in 2004. This increase was statistically significant (p=0.024), and this microorganism became the most frequently isolated in these patients, overtaking the rates of isolation of Pseudomonas aeruginosa. The S. equisimilis grew in pure culture, as a unique microorganism, in six samples (2.9 percent) out of 207. Fresh feces of 15 animals (horses and sheep) living in the proximities of the hospital were also examined and three of them positive for S. equisimilis. The biochemical profile of the strains isolated from the patients and from the animals was the same. These animals might have been the source of the dissemination of the outbreak in the hospital. New studies will be necessary to confirm the genetic relationship between the strains isolated from patients and animals.

O estreptococo beta-hemolítico do grupo C de Lancefield tem sido considerado patógeno humano emergente, mostrando importante papel como agente oportunista, implicado algumas vezes em infecções hospitalares e surtos. Este estudo está relatando o primeiro surto de infecção hospitalar causado pelos Streptococcus dysgalactiae subsp. equisimilis no Brasil. De janeiro de 2002 a dezembro de 2004, isolou-se S. equisimilis em 67/207 (32,37 por cento) das amostras de secreções de lesões de feridas coletadas de pacientes internados no Hospital de Dermatologia Sanitária do Paraná (HDSPR). A prevalência deste microrganismo aumentou de 11/42 (26,19 por cento) em 2002, 14/65 (21,54 por cento) em 2003 para 42/100 (42,00 por cento) em 2004. Este aumento foi estatisticamente significante (p=0.024), tornando este microrganismo o mais freqüentemente isolado nos pacientes, ultrapassando as taxas de isolamento de Pseudomonas aeruginosa. Em seis amostras (2,9 por cento) entre as 207 examinadas, S. equisimilis cresceu em cultivo puro, como único microrganismo. Também foram examinadas fezes frescas de 15 animais (cavalos e ovelhas) que vivem nas proximidades do hospital, e três amostras foram positivas para S. equisimilis. O perfil bioquímico encontrado entre os isolados dos pacientes foi o mesmo encontrado entre os isolados das fezes dos animais. Acredita-se que estes animais possam ter sido a fonte de disseminação do surto no hospital. Novos estudos serão necessários para confirmar o relacionamento genético entre os isolados dos pacientes e animais.