Publications by authors named "S I Shimakura"

Background: CYD-TDV (Dengvaxia®) was the first dengue vaccine approved, launched in Brazil in 2015 for individuals aged 9-44 years. We aimed to estimate the effectiveness of CYD-TDV in preventing symptomatic dengue cases during a campaign targeting individuals aged 15-27 years in selected municipalities in Paraná, Brazil. Additionally, we examined whether a history of dengue, as recorded by the surveillance system, modified the vaccine's effectiveness.

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The habitat loss is the main threat for many parrot species worldwide. However, the disturbed environments can influence the occurrence of the species positively or negatively, depending on its structure and potential use as an alternative environment. Therefore, this work aims to determine the relationship between land use types and the occurrence of the threatened Red-browed Amazon, identifying the land use types related to species' occurrence and the direction of these relationships.

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Background: The increasing number of dengue cases worldwide implies a greater exposure of at-risk groups, such as pregnant women. DENV infection during pregnancy has been increasingly associated with unfavorable outcomes, but the evolution of the disease and its clinical outcomes remain unclear. The objective of this study was to characterize dengue cases in reproductive aged women by comparing the development of the disease in pregnant and non-pregnant women.

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Purpose: Complex fetal behavior involving multiple parts of the body, called general movement (GM), has been considered an essential predictor of neurological functional development because it directly reflects the integrity of the brain and central and peripheral nervous systems. We have developed a novel method for quantitative analysis of fetal behavior using four-dimensional ultrasound (4DUS) and conducted a pilot study for quantitative assessment of fetal GM in the early second trimester.

Methods: All subjects underwent 4DUS to depict the whole fetal body, and maximum velocity (MAXV), median velocity (MV), average velocity (AV), and mode velocity (MOV) were calculated by utilizing optical flow analysis.

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Pertussis is a globally distributed infectious disease that is a significant cause of morbidity and mortality, especially in infants who are too young to be immunized. This disease is common in childhood, and when it occurs during the first few months of life, it leads to hospitalization and, sometimes, death. Brazil has adopted the strategy of maternal immunization against pertussis in late 2014.

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