Congenital syphilis in Roraima and Venezuelan migration: analysis of cases at the state maternity hospital in the 2017/2018 and 2020/2021 biennia / Sífilis congênita em Roraima e a migração venezuelana: análise de casos na maternidade estadual nos biênios 2017/2018 e 2020/2021 / Sífilis congénita en Roraima y migración venezolana: análisis de casos en la maternidad estatal en los bienios 2017/2018 y 2020/2021

Background and objectives: in 2017 and 2018, Roraima experienced the most significant increase in congenital syphilis incidence rates among all federal units. This phenomenon occurred in parallel with the significant Venezuelan migration to the region. The study aimed to analyze the relationship between the increase in cases of congenital syphilis registered at the Hospital Materno Infantil Nossa Senhora de Nazareth and the Venezuelan migratory crisis. Methods: this is a document-based, descriptive research, covering the 2017/2018 and 2020/2021 periods, developed from data collected in copies of congenital syphilis report/investigation forms from the hospital. Results: in the 2017/2018 biennium, the peak of Venezuelan migration in Roraima, fewer cases of syphilis occurred than when the migratory flow declined. In the 2020/2021 biennium, there was a decrease in the migratory flow due to the closing of the border and the acceleration of the interiorization process. Although it is the period with the highest number of reports of congenital syphilis among Venezuelan mothers, the percentage is considerably lower than that recorded among Brazilian women. The incidence rate was higher among the group of Brazilian mothers (7.5/1,000 live births, in the 2017/2018 period, and 11.5/1,000 live births, in the 2020/2021 period). Conclusion: Venezuelan migration, although it may have eventually exerted some influence on the total number of cases of congenital syphilis, cannot be considered the determining factor for the increase in cases of the disease in the hospital in the defined period, and other factors deserve to be assessed as decisive in this case.(AU)

Justificativa e objetivos: em 2017 e 2018, Roraima apresentou o aumento mais significativo nas taxas de incidência de sífilis congênita entre todas as unidades federativas. Este fenômeno ocorreu paralelamente à significativa migração venezuelana para a região. O estudo teve como objetivo analisar a relação entre o aumento de casos de sífilis congênita registrados no Hospital Materno Infantil Nossa Senhora de Nazareth e a crise migratória venezuelana. Métodos: trata-se de uma pesquisa documental, descritiva, abrangendo os períodos 2017/2018 e 2020/2021, desenvolvida a partir de dados coletados em cópias de fichas de notificação/investigação de sífilis congênita do hospital. Resultados: no biênio 2017/2018, pico da migração venezuelana em Roraima, ocorreram menos casos de sífilis do que quando o fluxo migratório diminuiu. No biénio 2020/2021, registou-se uma diminuição do fluxo migratório devido ao encerramento da fronteira e à aceleração do processo de interiorização. Embora seja o período com maior número de notificações de sífilis congênita entre mães venezuelanas, o percentual é consideravelmente inferior ao registrado entre as brasileiras. A taxa de incidência foi maior entre o grupo de mães brasileiras (7,5/1.000 nascidos vivos, no período 2017/2018, e 11,5/1.000 nascidos vivos, no período 2020/2021). Conclusão: A migração venezuelana, embora possa eventualmente ter exercido alguma influência no total de casos de sífilis congênita, não pode ser considerada o fator determinante para o aumento de casos da doença no hospital no período definido, e outros fatores merecem ser destacados. ser considerada decisiva neste caso.(AU)

Antecedentes y objetivos: en 2017 y 2018, Roraima experimentó el aumento más significativo en las tasas de incidencia de sífilis congénita entre todas las unidades federales. Este fenómeno se produjo en paralelo con la importante migración venezolana a la región. El estudio tuvo como objetivo analizar la relación entre el aumento de casos de sífilis congénita registrados en el Hospital Materno Infantil Nossa Senhora de Nazareth y la crisis migratoria venezolana. Métodos: se trata de una investigación descriptiva, documental, que abarca los períodos 2017/2018 y 2020/2021, desarrollada a partir de datos recolectados en copias de formularios de informe/investigación de sífilis congénita del hospital. Resultados: en el bienio 2017/2018, pico de migración venezolana en Roraima, ocurrieron menos casos de sífilis que cuando el flujo migratorio disminuyó. En el bienio 2020/2021 se produjo una disminución del flujo migratorio debido al cierre de fronteras y la aceleración del proceso de interiorización. Si bien es el período con mayor número de reportes de sífilis congénita entre madres venezolanas, el porcentaje es considerablemente menor que el registrado entre las mujeres brasileñas. La tasa de incidencia fue mayor entre el grupo de madres brasileñas (7,5/1.000 nacidos vivos, en el período 2017/2018, y 11,5/1.000 nacidos vivos, en el período 2020/2021). Conclusión: La migración venezolana, si bien eventualmente pudo haber ejercido alguna influencia en el número total de casos de sífilis congénita, no puede considerarse el factor determinante del aumento de casos de la enfermedad en el hospital en el período definido, y otros factores merecen ser considerados. considerarse decisivo en este caso.(AU)

Class A ß-lactamases and inhibitors: In silico analysis of the binding mode and the relationship with resistance.

ß-lactams are one of the most common antimicrobials used to treat bacterial infections. However, bacterial resistance has compromised their efficacy, mainly due to the ß-lactamase enzyme production. To overcome this resistance, ß-lactamase inhibitors can be used in association with these antimicrobials. Herein, we analyzed the structural characteristics of ß-lactamases and their interactions with classical inhibitors, such as clavulanic acid (CA), sulbactam (SB) and tazobactam (TZ) to gain insights into resistance. The homology models of five class A ß-lactamases, namely CARB-3, IMI-1, SFO-1, SHV-5 and TEM-10, were constructed and validated and revealed an overall 3D structural conservation, but with significant differences in the electrostatic potential maps, especially at important regions in the catalytic site. Molecular dockings of CA, SB and TZ with these enzymes revealed a covalent bond with the S70 in all complexes, except Carb-3 which is in agreement with experimental data reported so far. This is likely related to the less voluminous active site of Carb-3 model. Although few specific contacts were observed in the ß-lactamase-inhibitor complexes, all compounds interacted with the residues in positions 73, 130, 132, 236 and 237. Therefore, this study provides new perspectives for the design of innovative compounds with broad-spectrum inhibitory profiles against ß-lactamases.

Cervical cancer screening coverage in a high-incidence region.

OBJECTIVE To analyze the coverage of a cervical cancer screening program in a city with a high incidence of the disease in addition to the factors associated with non-adherence to the current preventive program. METHODS A cross-sectional study based on household surveys was conducted. The sample was composed of women between 25 and 59 years of age of the city of Boa Vista, RR, Northern Brazil who were covered by the cervical cancer screening program. The cluster sampling method was used. The dependent variable was participation in a women's health program, defined as undergoing at least one Pap smear in the 36 months prior to the interview; the explanatory variables were extracted from individual data. A generalized linear model was used. RESULTS 603 women were analyzed, with an mean age of 38.2 years (SD = 10.2). Five hundred and seventeen women underwent the screening test, and the prevalence of adherence in the last three years was up to 85.7% (95%CI 82.5;88.5). A high per capita household income and recent medical consultation were associated with the lower rate of not being tested in multivariate analysis. Disease ignorance, causes, and prevention methods were correlated with chances of non-adherence to the screening system; 20.0% of the women were reported to have undergone opportunistic and non-routine screening. CONCLUSIONS The informed level of coverage is high, exceeding the level recommended for the control of cervical cancer. The preventive program appears to be opportunistic in nature, particularly for the most vulnerable women (with low income and little information on the disease). Studies on the diagnostic quality of cervicovaginal cytology and therapeutic schedules for positive cases are necessary for understanding the barriers to the control of cervical cancer.

Cervical cancer screening coverage in a high-incidence region / Cobertura do rastreamento do câncer de colo de útero em região de alta incidência

OBJECTIVE To analyze the coverage of a cervical cancer screening program in a city with a high incidence of the disease in addition to the factors associated with non-adherence to the current preventive program. METHODS A cross-sectional study based on household surveys was conducted. The sample was composed of women between 25 and 59 years of age of the city of Boa Vista, RR, Northern Brazil who were covered by the cervical cancer screening program. The cluster sampling method was used. The dependent variable was participation in a women’s health program, defined as undergoing at least one Pap smear in the 36 months prior to the interview; the explanatory variables were extracted from individual data. A generalized linear model was used. RESULTS 603 women were analyzed, with an mean age of 38.2 years (SD = 10.2). Five hundred and seventeen women underwent the screening test, and the prevalence of adherence in the last three years was up to 85.7% (95%CI 82.5;88.5). A high per capita household income and recent medical consultation were associated with the lower rate of not being tested in multivariate analysis. Disease ignorance, causes, and prevention methods were correlated with chances of non-adherence to the screening system; 20.0% of the women were reported to have undergone opportunistic and non-routine screening. CONCLUSIONS The informed level of coverage is high, exceeding the level recommended for the control of cervical cancer. The preventive program appears to be opportunistic in nature, particularly for the most vulnerable women (with low income and little information on the disease). Studies on the diagnostic quality of cervicovaginal cytology and therapeutic schedules for positive cases are necessary for understanding the barriers to the control of cervical cancer. .

OBJETIVO Analisar a cobertura do programa de rastreamento do câncer do colo uterino em município com alta incidência da doença e os fatores relacionados à não adesão ao programa preventivo vigente. MÉTODOS Foi realizado estudo transversal, com base em inquérito domiciliar. A amostra foi composta por mulheres entre 25 e 59 anos de idade do município de Boa vista, RR, Brasil, com cobertura pelo programa de rastreamento do câncer do colo uterino. Foi utilizado o método de amostragem por conglomerado. A variável dependente foi a adesão ao programa de saúde da mulher, definida como a realização de pelo menos um teste de Papanicolaou nos 36 meses anteriores à data da entrevista; as variáveis explicativas foram extraídas a partir de informações individuais. Foi utilizado modelo linear generalizado. RESULTADOS Foram analisadas 603 mulheres, com idade média de 38,2 anos (DP = 10,2). Quinhentas e dezessete mulheres realizaram o exame, sendo a prevalência de realização, nos últimos três anos, de 85,7% (IC95% 82,5;88,5). Renda familiar per capita elevada e consulta médica recente associaram-se à menor taxa de não realização do exame na análise multivariada. O desconhecimento da doença, das causas e dos meios de prevenção correlacionou-se com a chance de não adesão ao rastreamento. Vinte por cento das mulheres relataram realização do exame em caráter oportunístico, e não rotineiro. CONCLUSÕES A cobertura informada é elevada, acima do recomendado para controle do câncer do colo uterino. O programa preventivo apresenta caráter oportunístico, sobretudo para as mulheres mais vulneráveis (com baixa renda e pouca informação sobre a doença). Estudos sobre a qualidade diagnóstica da citologia cervicovaginal e dos itinerários terapêuticos dos casos positivos são necessários para compreensão das barreiras para o controle do câncer do colo uterino. .

Biting indices, host-seeking activity and natural infection rates of anopheline species in Boa Vista, Roraima, Brazil from 1996 to 1998.

The epidemiology of the transmission of malaria parasites varies ecologically. To observe some entomological aspects of the malaria transmission in an urban environment, a longitudinal survey of anopheline fauna was performed in Boa Vista, Roraima, Brazil. A total of 7,263 anophelines was collected in human bait at 13 de Setembro and Caranã districts: Anopheles albitarsis sensu lato (82.8%), An. darlingi (10.3%), An. braziliensis (5.5%), An. peryassui (0.9%) and An. nuneztovari (0.5%). Nightly 12 h collections showed that An. albitarsis was actively biting throughout the night with peak activities at sunset and at midnight. An. darlingi bit during all night and did not demonstrate a defined biting peak. Highest biting indices, entomological inoculation rates and malaria cases were observed seasonally during the rainy season (April-November). Hourly collections showed host seek activity for all mosquitoes peaked during the first hour after sunset. An. darlingi showed the highest plasmodial malaria infection rate followed by An. albitarsis, An. braziliensis and An. nuneztovari (8.5%, 4.6%, 3% and 2.6%, respectively). An. albitarsis was the most frequently collected anopheline, presented the highest biting index and it was the second most frequently collected infected species infected with malaria parasites. An. albitarsis and An. darlingi respectively, are the primary vectors of malaria throughout Boa Vista.

Biting indices, host-seeking activity and natural infection rates of anopheline species in Boa Vista, Roraima, Brazil from 1996 to 1998

The epidemiology of the transmission of malaria parasites varies ecologically. To observe some entomological aspects of the malaria transmission in an urban environment, a longitudinal survey of anopheline fauna was performed in Boa Vista, Roraima, Brazil. A total of 7,263 anophelines was collected in human bait at 13 de Setembro and Caranä districts: Anopheles albitarsis sensu lato (82.8 percent), An. darlingi (10.3 percent), An. braziliensis (5.5 percent), An. peryassui (0.9 percent) and An. nuneztovari (0.5 percent). Nightly 12 h collections showed that An. albitarsis was actively biting throughout the night with peak activities at sunset and at midnight. An. darlingi bit during all night and did not demonstrate a defined biting peak. Highest biting indices, entomological inoculation rates and malaria cases were observed seasonally during the rainy season (April-November). Hourly collections showed host seek activity for all mosquitoes peaked during the first hour after sunset. An. darlingi showed the highest plasmodial malaria infection rate followed by An. albitarsis, An. braziliensis and An. nuneztovari (8.5 percent, 4.6 percent, 3 percent and 2.6 percent, respectively). An. albitarsis was the most frequently collected anopheline, presented the highest biting index and it was the second most frequently collected infected species infected with malaria parasites. An. albitarsis and An. darlingi respectively, are the primary vectors of malaria throughout Boa Vista