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Despite global recognition, WHO reports reveal significant gaps, with one in four healthcare facilities lacking basic water services, affecting over 1.8 billion people, and 21% lacking sanitation services, impacting 1.5 billion people, especially prevalent in low- and middle-income countries. This study aimed to critically evaluate the current state of water, sanitation and hygiene (WASH) facilities across a diverse range of healthcare settings. This review included various databases such as PubMed, MEDLINE, EMBASE, CINAHL, Scopus and grey literature; eligible studies employing various designs were scrutinized for WASH infrastructure and practices. Methodological quality was rigorously evaluated using the QuADS checklist. Data analysis, performed with R software, involved deriving pooled estimates of WASH intervention effects. Sensitivity analyses were conducted, employing statistical methods such as funnel plots to ensure robustness and mitigate biases. Of the 13,250 articles screened, 18 were included in this review. Meta-analyses revealed significant effect sizes for WASH interventions across domains - water (67.38%), sanitation (53.93%), waste management (40.82%), environment (56.58%), hygiene (66.83%), and management (42.30%). Widespread disparities in WASH persist across healthcare facilities, with rural areas facing notable deficits. Challenges in water quality, sanitation and waste management demand comprehensive, multi-sectoral approaches for improvement.
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We report here a Nipah virus (NiV) outbreak in Kozhikode district of Kerala state, India, which had caused fatal encephalitis in a 12-year-old boy and the outbreak response, which led to the successful containment of the disease and the related investigations. Quantitative real-time reverse transcription (RT)-PCR, ELISA-based antibody detection, and whole genome sequencing (WGS) were performed to confirm the NiV infection. Contacts of the index case were traced and isolated based on risk categorization. Bats from the areas near the epicenter of the outbreak were sampled for throat swabs, rectal swabs, and blood samples for NiV screening by real-time RT-PCR and anti-NiV bat immunoglobulin G (IgG) ELISA. A plaque reduction neutralization test was performed for the detection of neutralizing antibodies. Nipah viral RNA could be detected from blood, bronchial wash, endotracheal (ET) secretion, and cerebrospinal fluid (CSF) and anti-NiV immunoglobulin M (IgM) antibodies from the serum sample of the index case. Rapid establishment of an onsite NiV diagnostic facility and contact tracing helped in quick containment of the outbreak. NiV sequences retrieved from the clinical specimen of the index case formed a sub-cluster with the earlier reported Nipah I genotype sequences from India with more than 95% similarity. Anti-NiV IgG positivity could be detected in 21% of Pteropus medius (P. medius) and 37.73% of Rousettus leschenaultia (R. leschenaultia). Neutralizing antibodies against NiV could be detected in P. medius. Stringent surveillance and awareness campaigns need to be implemented in the area to reduce human-bat interactions and minimize spillover events, which can lead to sporadic outbreaks of NiV.
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COVID-19 , Virus Nipah , Niño , Brotes de Enfermedades , Humanos , Masculino , Virus Nipah/genética , Pandemias , SARS-CoV-2RESUMEN
Sea Snakes have the most potent venom among snakes known to mankind and a few species are implicated in human fatalities.1 Commonest Sea snake in the Indian Sea is Enhydrina Schistosa.2 Mortality is high in spite of therapy because of multiple complications. This is a Case report of two Fishermen who were bitten by Sea Snake and developed complications.
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Mordeduras de Serpientes , Animales , Elapidae , Humanos , Mordeduras de Serpientes/complicaciones , Mordeduras de Serpientes/terapia , PonzoñasRESUMEN
BACKGROUND: An outbreak of Nipah virus (NiV) disease occurred in the Kozhikode district of Kerala State in India in May 2018. Several cases were treated at the emergency medicine department (ED) of the Government Medical College, Kozhikode (GMCK). The clinical manifestations and outcome of these cases are described. METHODS: The study included 12 cases treated in the ED of GMCK. Detailed clinical examination, laboratory investigations, and molecular testing for etiological diagnosis were performed. RESULTS: The median age of the patients was 30 years and the male to female ratio was 1.4:1.0. All the cases except the index case contracted the infection from hospitals. The median incubation period was 10 days, and the case fatality ratio was 83.3%. Ten (83.3%) patients had encephalitis and 9 out of 11 patients whose chest X-rays were obtained had bilateral infiltrates. Three patients had bradycardia and intractable hypotension requiring inotropes. Encephalitis, acute respiratory distress syndrome, and myocarditis were the clinical prototypes, but there were large overlaps between these. Ribavirin therapy was given to a subset of the patients. Although there was a 20% reduction in NiV encephalitis cases treated with the drug, the difference was not statistically significant. The outbreak ended soon after the introduction of total isolation of patients and barrier nursing. CONCLUSION: The outbreak of NiV disease in Kozhikode in May 2018 presented as encephalitis, acute respiratory distress and myocarditis or combinations of these. The CFR was high. Ribavirin therapy was tried but no evidence for its benefit could be obtained.
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Infecciones por Henipavirus , Virus Nipah , Adulto , Brotes de Enfermedades , Servicio de Urgencia en Hospital , Femenino , Infecciones por Henipavirus/epidemiología , Humanos , India/epidemiología , MasculinoRESUMEN
ZnO nanoparticles (NPs) possess a wide range of biological functions in pharmaceutical and cosmetic applications due to their excellent antimicrobial, optical and UV protective properties. This study first reports the toxicological assessment of ZnO NPs green synthesized from Jatropha curcas shells for multifunctional biomedical applications. The hot water extract of J.curcas shells is utilized as a chelating agent for the reduction of zinc acetate and then, the prepared ZnO NPs are broadly characterized using X-ray spectroscopic and electron microscopic observations. The prepared ZnO NPs acquire high purity (100%) wurtzite crystal with hexagonal structure with the average particle size of 53â¯nm. In vitro and in vivo toxicity evaluation against human tumor cell lines and zebrafish embryos have ascertained the purpose of ZnO NPs in clinical research. Toxic effects of ZnO NPs were observed by a dose-dependent reduction of bacterial growth at ≥1â¯â¯â¯µgâ¯ml-1, by teratogenicity and genotoxicity in zebrafish embryos (from 3 to 90⯵gâ¯ml-1) and by a significant nanoparticle uptake (0.5â¯ng⯵l-1) by a fish serum. In contrast, ZnO NPs fail to reduce the proliferation of human bladder tumor cells (UC6) and cell viability of A549â¯cells in vitro up to 500⯵gâ¯ml-1. All these observations limit the unobstructed application of ZnO NPs at higher concentrations. Thus, abundantly used metal oxide nanoparticles like ZnO NPs examined in our present study in different animal models under in vitro and in vivo conditions will be the significant screening strategy to determine the nanotoxicity.
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Materiales Biocompatibles/química , Materiales Biocompatibles/toxicidad , Jatropha/química , Óxido de Zinc/química , Óxido de Zinc/toxicidad , Células A549 , Animales , Bacterias/efectos de los fármacos , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Tecnología Química Verde , Humanos , Nanopartículas del Metal/química , Nanopartículas del Metal/toxicidad , Pruebas de Toxicidad , Pez Cebra/embriologíaRESUMEN
We retrieved Nipah virus (NiV) sequences from 4 human and 3 fruit bat (Pteropus medius) samples from a 2018 outbreak in Kerala, India. Phylogenetic analysis demonstrated that NiV from humans was 96.15% similar to a Bangladesh strain but 99.7%-100% similar to virus from Pteropus spp. bats, indicating bats were the source of the outbreak.
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Quirópteros/virología , Brotes de Enfermedades , Infecciones por Henipavirus/epidemiología , Infecciones por Henipavirus/virología , Virus Nipah/clasificación , Virus Nipah/genética , Animales , Células Cultivadas , Efecto Citopatogénico Viral , Infecciones por Henipavirus/historia , Infecciones por Henipavirus/transmisión , Historia del Siglo XXI , Humanos , India/epidemiología , Mutación , Vigilancia en Salud PúblicaRESUMEN
Computer aided diagnosis using artificial intelligent techniques made tremendous improvement in medical applications especially for easy detection of tumor area, tumor type and grades. This paper presents automatic glioma tumor grade identification from magnetic resonant images using Wndchrm tool based classifier (Weighted Neighbour Distance using Compound Heirarchy of Algorithms Representing Morphology) and VGG-19 deep convolutional neural network (DNN). For experimentation, DICOM images are collected from reputed government hospital and the proposed intelligent system categorized the tumor into four grades such as low grade glioma, oligodendroglioma, anaplastic glioma and glioblastoma multiform. After preprocessing, features are extracted, optimized and then classified using Windchrm tool where the most significant features are selected on the basis of Fisher score. In the case of DNN classifier, data augmentation is also performed before applying the images into the deep learning network. The performance of the classifiers are analysed with various measures such as accuracy, precision, sensitivity, specificity and F1-score. The results showed reasonably good performance with a maximum classification accuracy of 92.86% for the Wndchrm classifier and 98.25% for VGG-19 DNN classifier. The results are also compared with similar recent works and the proposed system is found to have better performance.
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Inteligencia Artificial , Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/patología , Glioma/diagnóstico por imagen , Glioma/patología , Adulto , Femenino , Humanos , Interpretación de Imagen Asistida por Computador , Aprendizaje Automático , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Redes Neurales de la Computación , Sensibilidad y Especificidad , Carga TumoralRESUMEN
Breast cancer is one of the life-threatening cancers occurring in women. In recent years, from the surveys provided by various medical organizations, it has become clear that the mortality rate of females is increasing owing to the late detection of breast cancer. Therefore, an automated algorithm is needed to identify the early occurrence of microcalcification, which would assist radiologists and physicians in reducing the false predictions via image processing techniques. In this work, we propose a new algorithm to detect the pattern of a microcalcification by calculating its physical characteristics. The considered physical characteristics are the reflection coefficient and mass density of the binned digital mammogram image. The calculation of physical characteristics doubly confirms the presence of malignant microcalcification. Subsequently, by interpolating the physical characteristics via thresholding and mapping techniques, a three-dimensional (3D) projection of the region of interest (RoI) is obtained in terms of the distance in millimeter. The size of a microcalcification is determined using this 3D-projected view. This algorithm is verified with 100 abnormal mammogram images showing microcalcification and 10 normal mammogram images. In addition to the size calculation, the proposed algorithm acts as a good classifier that is used to classify the considered input image as normal or abnormal with the help of only two physical characteristics. This proposed algorithm exhibits a classification accuracy of 99%.
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Neoplasias de la Mama/diagnóstico por imagen , Calcinosis/diagnóstico por imagen , Mamografía/métodos , Reconocimiento de Normas Patrones Automatizadas/métodos , Interpretación de Imagen Radiográfica Asistida por Computador/métodos , Algoritmos , Mama/diagnóstico por imagen , Análisis por Conglomerados , Femenino , Humanos , Reproducibilidad de los Resultados , Sensibilidad y EspecificidadRESUMEN
The diagnosis between chronic osteomyelitis, Ewing sarcoma and lymphoma often is being confusing in many occasions. As the latter two conditions are malignant, early diagnosis and interventions are crucial. We present a 28 year old male with features of chronic osteomyelitis of right tibia 2 years back then changed through Ewing sarcoma to B-cell lymphoma in the histological diagnosis. This case report highlights the difficulties that arise in diagnosing primary bone lymphomas which may masquerade as chronic osteomyelitis and hence the need for immunohistochemistry in chronic recurrent osteomyelitis.
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In this study, a conventional mixed oxide method was used to prepare nanocomposites of titanium dioxide and magnesium aluminate samples. The synthesis process of a low concentration of posttransition metal oxide like TiO2 with pre-transition metal oxides like MgO and Al2O3 and its gas sensing behaviour were investigated. The present work focuses on applying different nanocomposite samples of (TiO2) x and MgAl2O4 (at x = 0 magnesium aluminate namely MA; x = 0°25 and 0.75 N namely MAT0.25 and MAT0.75 at 4 and 10 wt% of TiO2 in MgAl2O4 respectively and TiO2 namely T) for gas sensing applications (O2, CO and H2 gases). The composite samples were characterized by their X-ray diffraction pattern, Fourier transform infrared spectroscopy, a particle size analyzer, X-ray fluorescent spectroscopy, scanning electron microscopy, ultraviolet visible spectroscopy, and BrunauerEmmettTeller methods. The response to changes in gas pressure (from 0.5 to 2 bar) was quantitatively studied in all samples (MA, MAT0.25, MAT0.75 and T) at different operating temperatures from 300 to 600 K. All samples showed a fast and improved gas response at different operating temperatures. Moreover, it was observed that the gas response of the composite sample, MAT0.75 increased by 11% more than the pure titanium sample at an operating temperature of 360 K, on the passage of O2 gas.
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Nanocrystalline Tin Oxide (SnO2) is Non-Stoichiometric in Nature with Functional Properties Suitable for gas sensing. In this study, SnO2nanoparticles were prepared by the sol-gel technique, which were then characterised using X-ray diffraction. The nanoparticles showed tetragonal structure with an average crystallite size of 18 nm. The stretching and vibration modes of SnO2were confirmed using Fourier transform infrared spectroscopy. The size of SnO2 nanoparticles was determined using particle size analyser, which was found be 60 ± 10 nm on average. The surface morphology of the nanoparticles was investigated using scanning electron microscope, which showed irregular-sized agglomerated SnO2nanostructures. In addition, primary particle size was evaluated using high-resolution transmission electron microscopy, which was found to be 50 nm on average. The polyvinyl alcohol/SnO2 composite thin film was prepared on a glass substrate using spin-coating method. The values of band gap energy and electrical conductance of 13-layer thin film were found to be 2.96 eV and 0.0505 mho, respectively. Sulfur dioxide (SO2) was suitably tailored to verify the sensor response over a concentration range of 10-70 ppm at room temperature. The performance, response, and recovery time of sensors were increased by increasing the layers of the thin film.
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Membranas Artificiales , Nanopartículas/química , Alcohol Polivinílico/química , Dióxido de Azufre/análisis , Compuestos de Estaño/químicaRESUMEN
In this investigation, ultrasonication process was used for the synthesis of magnesium doped nano-hydroxyapatite (MH) (0, 1, 2, and 3 mol% of Mg concentration) particles with controlled size and surface morphology. The size of the prepared MH particles was in the range of 20-100 nm with narrow distribution. Increase in the concentration of Mg reduced the particle size distribution from 60 to 40 nm. On incorporation of Mg in HAp lattice, an increase of 20-66 nm in specific surface area was observed in microporous HAp particles. XRF and XRD patterns reveal that the particles possess stoichiometric composition with reduced crystallinity with respect to the Mg concentration. Surface morphology of MH/chitosan (CTS) coated implant was found to be uniform without any defects. The corrosion rate of the implant decreased with increase in Mg concentration. The in vitro formation of bonelike apatite layer on the surface of the MH/CTS coated implant was observed from simulated body fluid studies. The antimicrobial activity of the MH/CTS composites against gram-positive and gram-negative bacterial strains indicated that increasing Mg concentration enhanced antimicrobial properties. Nanoindentation analysis of apatite coated implant surface reveals that the mechanical property depends on the concentration of magnesium in HAp. From the cytotoxicity analysis against NIH 3T3 fibroblast, it was observed that the Mg incorporated HAp/CTS composite was less toxic than the MHO/CTS composite. From this result, it was concluded that the MH/CTS nanocomposites coated implant is the excellent material for implants.
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Quitosano/química , Materiales Biocompatibles Revestidos/química , Durapatita/química , Magnesio/química , Nanocompuestos/química , Acero Inoxidable/química , Animales , Antibacterianos/química , Antibacterianos/farmacología , Bacterias/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Quitosano/farmacología , Materiales Biocompatibles Revestidos/farmacología , Materiales Biocompatibles Revestidos/toxicidad , Durapatita/farmacología , Módulo de Elasticidad , Magnesio/farmacología , Ensayo de Materiales , Ratones , Células 3T3 NIH , Nanocompuestos/toxicidad , Tamaño de la Partícula , Polvos , Prótesis e Implantes , Acero Inoxidable/farmacología , Propiedades de SuperficieRESUMEN
In this study, we used a new simple chemical method to synthesise nanostructured magnesium aluminate (NMA) powder. Sol-gel technique followed by sonication was used to develop different sensor samples namely NMA573, NMA873, and NMA1 073 by calcination at temperatures of 573, 873, and 1073 K respectively. Average crystallite size of 18-27 nm and specific surface area of 68.09 to 61.84 m2 g(-1) was obtained for the sensor samples. The existence of functional groups at 800 and 550 cm-1 corresponding respectively to AIO6 group and the lattice vibration of MgO4 stretching were confirmed through FTIR studies; SEM/EDX confirm the spherical morphology with elemental composition Mg, Al and O at different calcination temperatures. UV-Vis absorption spectra show band gap energy as 3.50, 3.48, and 3.44 eV for the sensor samples NMA573, NMA873, and NMA1 073 respectively. The effect of polyethylene glycol on the gas-sensing behaviour was studied in all the sensor samples. In particular, NMA1073 was found to have better resistance and sensor response for CO gas than NMA573 and NMA873. The effect of increase in calcination temperature of the sensor samples on the structural, morphological, optical, and gas response properties were carried out extensively to explore its gas sensing applications.
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A case study of 35-year-old woman with persistent breathlessness and wheezing that had been unsuccessfully treated with inhaled beta 2-agonists and steroids for about two years. Patient developed dry cough and haemoptysis, so investigated further. Spirometry demonstrated a restrictive pattern. Chest CT demonstrated well defined hyperdense lesion in right middle lobe. Biopsy taken from the mass during bronchoscopy demonstrated the picture of atypical bronchial carcinoid. In this case, due to the lack of awareness, diagnosis of carcinoid was delayed by two years.
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Asma/diagnóstico , Neoplasias de los Bronquios , Tumor Carcinoide , Neumonectomía/métodos , Adulto , Biopsia/métodos , Neoplasias de los Bronquios/diagnóstico , Neoplasias de los Bronquios/patología , Neoplasias de los Bronquios/fisiopatología , Neoplasias de los Bronquios/cirugía , Tumor Carcinoide/diagnóstico , Tumor Carcinoide/patología , Tumor Carcinoide/fisiopatología , Tumor Carcinoide/cirugía , Femenino , Humanos , Espirometría/métodos , Tomografía Computarizada por Rayos X/métodos , Resultado del TratamientoRESUMEN
A naturally occurring rambutan peel waste was employed to synthesis bioinspired zinc oxide nanochains. Rambutan peels has the ability of ligating zinc ions as a natural ligation agent resulting in zinc oxide nanochains formation due to its extended polyphenolic system over incubation period. Successful formation of zinc oxide nanochains was confirmed employing transmission electron microscopy studies. About 60% and â¼40% cell viability was lost and 50% and 10% morphological change was observed in 7 and 4 days incubated ZnO treated cells compared with control. Moreover, 50% and 55% of cell death was observed at 24 and 48 h incubation with 7 days treated ZnO cells and hence alters and disturbs the growth of cancer cells and could be used for liver cancer cell treatment.
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Tecnología Biomédica , Biomimética/métodos , Nanopartículas/química , Sapindaceae/química , Residuos , Óxido de Zinc/síntesis química , Recuento de Células , Forma de la Célula/efectos de los fármacos , Cromatografía Líquida de Alta Presión , Células Hep G2 , Humanos , Nanopartículas/ultraestructura , Espectroscopía de Fotoelectrones , Espectrometría por Rayos X , Espectroscopía Infrarroja por Transformada de Fourier , Espectrometría Raman , Termogravimetría , Difracción de Rayos X , Óxido de Zinc/farmacologíaRESUMEN
Silica and phosphate based bioactive glass nanoparticles (58SiO2-33CaO-9P2O5) with doping of neem (Azadirachta indica) leaf powder and silver nanoparticles were prepared and characterised. Bioactive glass nanoparticles were produced using sol-gel technique. In vitro bioactivity of the prepared samples was investigated using simulated body fluid. X-ray diffraction (XRD) pattern of prepared glass particles reveals amorphous phase and spherical morphology with a particle size of less than 50 nm. When compared to neem doped glass, better bioactivity was attained in silver doped glass through formation of hydroxyapatite layer on the surface, which was confirmed through XRD, Fourier transform infrared (FTIR), and scanning electron microscopy (SEM) analysis. However, neem leaf powder doped bioactive glass nanoparticles show good antimicrobial activity against Staphylococcus aureus and Escherichia coli and less bioactivity compared with silver doped glass particles. In addition, the biocompatibility of the prepared nanocomposites reveals better results for neem doped and silver doped glasses at lower concentration. Therefore, neem doped bioactive glass may act as a potent antimicrobial agent for preventing microbial infection in tissue engineering applications.
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Antiinfecciosos/farmacología , Azadirachta/química , Vidrio/química , Hojas de la Planta/química , Líquidos Corporales/efectos de los fármacos , Línea Celular Tumoral , Forma de la Célula/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Escherichia coli/efectos de los fármacos , Humanos , Concentración de Iones de Hidrógeno , Pruebas de Sensibilidad Microbiana , Nanopartículas/ultraestructura , Polvos , Plata/farmacología , Espectrometría por Rayos X , Espectroscopía Infrarroja por Transformada de Fourier , Staphylococcus aureus/efectos de los fármacos , Difracción de Rayos XRESUMEN
BACKGROUND: Congenital dislocation of the radial head of the elbow is rare. It is genetically transmitted in some cases and is often associated with syndromes, such as Nail-Patella syndrome, antecubital pterygium and ulnar dysplasia. About two thirds are posterior, with the remainder being either anterior (15%) or lateral (15%). The natural history of the condition is that symptoms are relatively benign, with only some limitation of motion and deformity. Treatment either involves early attempts at reconstruction or delayed intervention at skeletal maturity with radial head excision. We evaluated the radiographic and functional results of a two-in-one procedure (radial shortening and open reduction) in the treatment of congenital dislocation of the radial head of an eight year old girl. OBJECTIVE: To describe a technique for easy reduction and maintenance of normal radiocapitellar joint anatomy in cases of congenital dislocation of the radial head. METHOD: We have introduced one modification to the Sachar's method of open reduction by adding radial shortening. This can be described as a 'two incision approach' with the first incision for the radial shortening and the second for the open reduction of the radiocapitellar joint. The radial shaft was osteotomised first before we performed the radial head relocation. Then the overlapping part of radial shaft was trimmed. It was stabilized with a transarticular K wire fixation. RESULTS: At one year follow up, the elbow is stable with no valgus or fixed flexion deformity. Supination has increased to 40 degrees from zero degrees. An X-ray showed reformation of the radial head with good congruity of the radiocapitellar joint and correction of the radial bow. CONCLUSION: As far as the authors are aware, this is the first report of congenital dislocation of the radial head being treated by radial shortening and open reduction of radiocapitellar joint through a two incision approach (two-in-one approach). This paper describes this new technique, which we implemented for easy reduction maintenance of normal radiocapitellar joint anatomy.
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A simple and effective ultrasonication method was applied for the preparation of 0, 0.4, 0.8, 1.0 and 1.6 wt% silicon substituted hydroxyapatite (HAp) (SH). The Ca/P ratio of the synthesised SH nanoparticles were in the range of 1.58-1.70. Morphological changes were noticed in HAp with respect to the amount of Si from 0 to 1.6 wt%. The morphology of the particles changed from spherical shape to rod-like morphology with respect to the amount of Si which was confirmed using transmission electron microscopy. X-ray diffraction studies confirm the formation of phase pure SH nanoparticles without any secondary phase. Chitosan (CTS) blended SH nanocomposites coating on surgical grade 316 L stainless steel (316 L SS) implant was made by spin coating technique. The surface of the coated implant was characterised using scanning electron microscopy which confirms the uniform coating without cracks and pores. The increased corrosion resistance of the 1.6 wt% of SH/CTS-coated SS implant in the simulated body fluid (SBF) indicates the long-term biostability of SH composite-coated ceramics in vitro than the 0 wt% SH/CTS. The testing of SH/CTS nanocomposites with gram-positive and gram-negative bacterial strains confirms that the antibacterial ability improves with the higher substitution of Si. In addition, formation of bone-like apatite layer on the SH/CTS-coated implant in SBF was studied through SEM analysis and it confirms the ability to increase the HAp formation on the surface of 1.0 wt% SH/CTS-coated 316 L SS implant.