Publications by authors named "Nicolas Ramos"
Serotype distribution, clinical characteristics, and antimicrobial resistance of pediatric invasive pneumococcal disease in Colombia during PCV10 mass vaccination (2017-2022).
Front Med (Lausanne)
May 2024
Article Synopsis
- * A total of 530 patients were reported, with the majority exhibiting pneumonia; the study highlighted high rates of ICU admissions (50.6%) and notable resistance to antibiotics among meningial and non-meningial isolates.
- * The findings indicated a decrease in PCV10 serotypes but an increase in the prevalence of serotypes 19A and 6C, leading to Colombia's decision to switch to the PCV13 vaccine in July 202
Simple synthetic routes, high active layer thickness tolerance as well as stable organic solar cells are relentlessly pursued as key enabling traits for the upscaling of organic photovoltaics. Here, the potential to address these issues by tuning donor polymer molecular weight is investigated. Specifically, the focus is on PTQ10, a polymer with low synthetic complexity, with number average molecular weights of 2.
View Article and Find Full Text PDFA three-year-old female patient was admitted to our institution due to subacute fever, intermittent vomiting, persistent bilateral mydriasis after cycloplegia, right central facial palsy, and mild right hemiparesis with hyperreflexia. Brain MRI shows encephalitis in frontal, parietal, insular, and left putamen course and loss of cortical volume and white matter of the entire left hemisphere which are features described in Rasmussen's encephalitis (RE). Therapy with intravenous methylprednisolone bolus was initiated, with adequate clinical response.
View Article and Find Full Text PDFBackground: Cardiovascular diseases (CVDs) are the main cause of morbidity and mortality in the world. Previous studies disagree about the prevalence of cardiovascular risk factors (CVRFs) among medical students.
Objectives: Determine the CVRFs prevalence in medical students.
Objective: The present study aims to estimate the frequency of COVID 19 infections in vaccinated health personnel at a Los CObos Medical Center in Bogotá, Colombia. The percentage of people positive to the PCR test and their clinical characteristics were analyzed.
Methods: We performed a cross-sectional study.
Emergent bioelectronic technologies are underpinned by the organic electrochemical transistor (OECT), which employs an electrolyte medium to modulate the conductivity of its organic semiconductor channel. Here we utilize postpolymerization modification (PPM) on a conjugated polymer backbone to directly introduce glycolated or anionic side chains via fluoride displacement. The resulting polymers demonstrated increased volumetric capacitances, with subdued swelling, compared to their parent polymer in -type enhancement mode OECTs.
View Article and Find Full Text PDFChanges in the incidence of acute bacterial meningitis caused by and the implications of serotype replacement in children in Colombia after mass vaccination with PCV10.
Front Pediatr
September 2022
Article Synopsis
- Acute bacterial meningitis (ABM) is a serious health issue that has reappeared in Colombia after new vaccines were introduced, as some types of bacteria are not covered by these vaccines.
- A study across 17 hospitals in Colombia looked at how cases of meningitis changed before and after the PCV10 vaccine was used.
- The study found that while some types of bacteria decreased, others, like Spn19A, became more common and showed resistance to medicines, meaning they are harder to treat; there was also a rise in death rates from this disease.
Epidemiological characteristics and serotype distribution of culture-confirmed pediatric pneumococcal pneumonia before and after PCV 10 introduction, a multicenter study in Bogota, Colombia, 2008-2019.
Vaccine
May 2022
Article Synopsis
- - PCVs have helped reduce pneumonia in children, with Colombia starting mass vaccination using PCV10 in 2012, leading to the comparison of pneumonia cases before (2008-2011) and after (2014-2019) vaccination.
- - The study analyzed 370 cases revealing a significant drop in occurrences of serotypes 1 and 14, while serotypes 19A, 3, and 6A surged, indicating more serious cases needing increased hospital care and longer antibiotic treatment.
- - Findings suggest that PCV10 decreased specific serotypes but allowed for the rise of more severe strains, emphasizing the need for transitioning to a more effective vaccine like PCV13 to combat evolving pneumonia challenges.
Precise determination of structural organization of semi-conducting polymers is of paramount importance for the further development of these materials in organic electronic technologies. Yet, prior characterization of some of the best-performing materials for transistor and photovoltaic applications, which are based on polymers with rigid backbones, often resulted in conundrums in which X-ray scattering and microscopy yielded seemingly contradicting results. Here we solve the paradox by introducing a new structural model, , semi-paracrystalline organization.
View Article and Find Full Text PDFArticle Synopsis
- The introduction of pneumococcal conjugate vaccines (PCV) has significantly reduced the incidence of invasive pneumococcal disease (IPD), leading to a decrease in vaccine-associated serotypes, but has resulted in the emergence of non-vaccine serotypes like 19A.
- A study conducted on pediatric patients with IPD from 2008 to 2017 in Bogota examined cases related to the implementation of the PCV10 vaccine, focusing on various infections and analyzing demographic and clinical data.
- The prevalence of IPD caused by serotype 19A increased from 4.4% (2008-2011) to 32.4% (2014-2017), with pneumonia being the
Integrating an absorbing thin film into a resonant cavity is the most practical way to achieve perfect absorption of light at a selected wavelength in the mid-to-far infrared, as required to target blackbody radiation or molecular fingerprints. The cavity is designed to resonate and enable perfect absorption in the film at the chosen wavelength λ. However, in current state-of-the-art designs, a still large absorbing film thickness (∼λ/50) is needed and tuning the perfect absorption wavelength over a broad range requires changing the cavity materials.
View Article and Find Full Text PDFArticle Synopsis
- The study investigated the relationship between caries risk, nutrition, access to dental care, and socio-behavioral factors with early childhood caries in Anapoima, Colombia, using the ICDASepi assessment system.
- It involved 316 children aged 8 to 71 months and measured caries prevalence, risk factors, and the caregivers' educational background through a questionnaire about oral health and dental access.
- Findings indicated high caries prevalence (65.2%) and identified significant associations between caries experience and factors such as poor nutritional status, caregiver education, and access to dental care, highlighting oral health disparities in the region.
Introduction: Streptococcus pneumoniae (S. pneumoniae), also known as pneumococcus, is one of the main bacteria associated with mortality in children under 2 years of age, with a morbidity and mortality incidence that varies according to demographics and exposure to risk, or protective factors.
Objective: To describe the child mortality due to invasive pneumococcal disease (IPD) between 2008 -2014 (6 years), in 8 Medical Centres in Bogotá, Colombia.