scholarly journals Distribution and titres of rotavirus antibodies in different age groups

1977 ◽  
Vol 79 (3) ◽  
pp. 365-372 ◽  
Author(s):  
M. M. Elias
Keyword(s):  
Indirect Immunofluorescence ◽  
Acute Gastroenteritis ◽  
Neutralizing Antibodies ◽  
Complement Fixation ◽  
Age Groups ◽  
Newborn Infants ◽  
Older Age ◽  
Human Rotavirus ◽  
Hospital Patients

SUMMARYThree hundred and fifty-seven sera selected at random from hospital patients of all ages were examined for rotavirus antibodies using indirect immunofluorescence (FA) and complement fixation tests (CFT). Three hundred and fourteen of these were also tested for neutralizing antibodies to human rotavirus. Sera from patients admitted with a diagnosis of acute gastroenteritis were excluded from this survey.FA antibodies were found in newborn infants but fell to undetectable titres at 3 months. The highest titres were found in children between the ages of one and three years. In older age groups, the modal titre fell gradually with increasing age until, in sera from those above 70 years of age, FA antibodies were almost undetectable. The same pattern was observed with neutralizing antibodies. A high modal titre of CF antibodies was only found in sera from those aged one to three years.

AN EMPIRICAL ANALYSIS OF ENTREPRENEURIAL INTENTION AMONGST STUDENTS IN UTTAR PRADESH

2017 ◽  
Vol 7 (02) ◽  
Author(s):  
Anu Kohli ◽  
Neha Tiwari
Keyword(s):  
Work Experience ◽  
Family Background ◽  
Age Groups ◽  
Uttar Pradesh ◽  
Entrepreneurial Intention ◽  
Educational Background ◽  
Older Age ◽  
Postgraduate Students ◽  
Career Option ◽  
Postgraduate Level

This research paper analyses factors that impact entrepreneurial intention among graduate and postgraduate students enrolled in professional courses at government and private institutes in the state of Uttar Pradesh. The objective of this study is to analyze whether the student’s academic background, demographic profile and family background impact various factors that affect entrepreneurial intention. The study was conducted during 2015-16 on a sample of 460 student respondents across various cities of Uttar Pradesh.The results of the analysis indicate that students of male gender, belonging to higher income, in older age groups, having work experience, enrolled in government institutes, belonging to business background and enrolled at postgraduate level are more likely to consider entrepreneurship as a more attractive career option, perceive that it is easier to start and do business, have more positive perception about family and societal support they receive in entrepreneurial career choice, are more open to risks and are more confident about their entrepreneurial skills and knowledge . The students having work experience, enrolled in government institutes, and belonging to business background are more likely to find availability of capital as a constraint in entrepreneurial career. The students belonging to older age groups, having work experience and enrolled in government institutes are more likely to consider availability of land/premise and resources as a constraint in entrepreneurial choice. The findings of this study will be instrumental in understanding and in designing policy imperatives for promoting entrepreneurship in the state.Key Words: Entrepreneurial intention, Students, Demographic factors, Family background, Educational background.

scholarly journals Human Astrovirus Outbreak in a Daycare Center and Propagation among Household Contacts

Viruses ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1100
Author(s):  
Ignacio Parrón ◽  
Elsa Plasencia ◽  
Thais Cornejo-Sánchez ◽  
Mireia Jané ◽  
Cristina Pérez ◽  
...  
Keyword(s):  
Acute Gastroenteritis ◽  
Age Groups ◽  
Rt Pcr ◽  
Daycare Center ◽  
Infected People ◽  
Conditioning Factors ◽  
Household Contacts ◽  
Human Astrovirus ◽  
Asymptomatic Infections ◽  
Clinical Cases

We investigated an outbreak of acute gastroenteritis due to human astrovirus in a daycare center, describing the transmission mechanism, the most affected age groups, conditioning factors and the extent of the outbreak among household contacts of the daycare center attenders. Data were collected from persons exposed at the daycare center and their home contacts. Fecal samples from affected and non-affected daycare center attenders were analyzed for viruses causing acute gastroenteritis by RT-PCR. The percentage of households affected and the attack rates (AR) were calculated. The attack rates were compared using the rate ratio (RR) with 95% confidence intervals. Information was obtained from 245 people (76 attenders and 169 contacts) of whom 49 were clinical cases. Five HAstV-4, two HAstV-8 and three non-typable HAstV cases were identified (six from clinical cases and four from asymptomatic infected people). The global AR was 20% (41.2% in children aged < 2 years). Data were obtained from 67 households: 20 households of affected attenders and 47 of non-affected attendees. Household contacts of affected attenders had a higher AR (74.3%) than that of non-affected attendees (2.4%). We found asymptomatic infections amongst daycare attendees. The transmission of HAstV during the outbreak was not limited to the daycare center but extended to household contacts of both affected and non-affected attenders.

Molecular epidemiology of norovirus from patients with acute gastroenteritis in northwestern Spain

2014 ◽  
Vol 143 (2) ◽  
pp. 316-324 ◽  
Author(s):  
C. F. MANSO ◽  
J. L. ROMALDE
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Epidemiology ◽  
Genetic Drift ◽  
Acute Gastroenteritis ◽  
Age Groups ◽  
Capsid Gene ◽  
High Prevalence ◽  
High Incidence ◽  
Northwestern Spain

SUMMARYThe high incidence of norovirus (NoV) infections seems to be related to the emergence of new variants that evolved by genetic drift of the capsid gene. In this work, that represents a first effort to describe the molecular epidemiology of NoV in the northwest of Spain, a total of eight different NoV genotypes (GII.1, GII.3, GII.4, GII.6, GII.7, GII.12, GII.13, GII.14) were detected. The major genotypes observed were GII.4 (45·42%) and GII.14 (34·9%), being detected in all age groups. In addition, and although most of GII.4 sequences belonged to 2006b (7·2%) and 2010 (50·35%) variants, the presence of new NoV variants was observed. Phylogenetic analysis revealed that a high number of GII.4 sequences (35·24%) could be assigned to the newly emerging Sydney 2012 variant, even during late 2010. The high prevalence of NoV GII.14 observed in this study may indicate the emergence of this genotype in Spain.

scholarly journals Emerging trends in the epidemiology of invasive mycoses in England and Wales (1990–9)

2001 ◽  
Vol 126 (3) ◽  
pp. 397-414 ◽  
Author(s):  
T. L. LAMAGNI ◽  
B. G. EVANS ◽  
M. SHIGEMATSU ◽  
E. M. JOHNSON
Keyword(s):  
Disease Surveillance ◽  
Fungal Infections ◽  
Communicable Disease ◽  
Pneumocystis Carinii ◽  
Age Groups ◽  
Public Health Problem ◽  
Risk Groups ◽  
Older Age ◽  
England And Wales ◽  
Invasive Mycoses

Invasive fungal infections are becoming an increasing public health problem owing to the growth in numbers of susceptible individuals. Despite this, the profile of mycoses remains low and there is no surveillance system specific to fungal infections currently existing in England and Wales. We analysed laboratory reports of deep-seated mycoses made to the Communicable Disease Surveillance Centre between 1990 and 1999 from England and Wales. A substantial rise in candidosis was seen during this period (6·76–13·70 reports per million population/year), particularly in the older age groups. Rates of cryptococcosis in males fluctuated over the decade but fell overall (1·05–0·66 per million population/year), whereas rates of female cases gradually rose up until 1998 (0·04–0·41 per million population/year). Reports of Pneumocystis carinii in men reduced substantially between 1990 and 1999 (2·77–0·42 per million population/year) but showed little change in women. Reports of aspergillosis fluctuated up until 1996, after which reports of male and female cases rose substantially (from 0·08 for both in 1996 to 1·92 and 1·69 per million population/year in 1999 for males and females respectively), largely accounted for by changes in reporting practice from one laboratory. Rates of invasive mycoses were generally higher in males than females, with overall male-to-female rate ratios of 1·32 (95% CI 1·25–1·40) for candidosis, 1·30 (95% CI 1·05–1·60) for aspergillosis, 3·99 (95% CI 2·93–5·53) for cryptococcosis and 4·36 (95% CI 3·47–5·53) for Pneumocystis carinii. The higher male than female rates of reports is likely to be a partial reflection of HIV epidemiology in England and Wales, although this does not fully explain the ratio in infants and older age groups. Lack of information on underlying predisposition prevents further identification of risk groups affected. Whilst substantial under-reporting of Pneumocystis carinii and Cryptococcus species was apparent, considerable numbers of superficial mycoses were mis-reported indicating a need for clarification of reporting guidelines. Efforts to enhance comprehensive laboratory reporting should be undertaken to maximize the utility of this approach for surveillance of deep-seated fungal infections.

Memory Loss with Age: Acquisition and Retrieval

1967 ◽  
Vol 20 (1) ◽  
pp. 223-226 ◽  
Author(s):  
David Schonfield
Keyword(s):  
Age Groups ◽  
Memory Loss ◽  
Older Age ◽  
Methodological Problems

Methodological problems arise when attempting to balance differences between age groups in acquisition, so that differences in remembering can be assessed. Higher recognition than recall scores in older age groups are unlikely to be due to partial input images when meaningful words are employed and therefore support the hypothesis of special retrieval difficulties.

Investigation of Children with Acute Gastroenteritis by Multiplex PCR Method in Central Part of Turkey

2022 ◽  
Author(s):  
Fatih Yılmaz ◽  
Havva Kaya ◽  
Mehmet Özdemir
Keyword(s):  
Multiplex Pcr ◽  
Acute Gastroenteritis ◽  
Hospital Admissions ◽  
Age Groups ◽  
Viral Gastroenteritis ◽  
Viral Agent ◽  
Mortality And Morbidity ◽  
Stool Samples ◽  
Pcr Method ◽  
Norovirus Gii

Abstract Objective Gastroenteritis is a disease that affects all age groups, especially children, and causes high mortality and morbidity in all countries. The most common agents of acute gastroenteritis are viral agents. As a result, millions of diarrhea attacks and hospital admissions occur worldwide every year due to viral gastroenteritis. This study uses the multiplex polymerase chain reaction (PCR) method to investigate the viruses that are the causative agents of viral gastroenteritis in the pediatric patient group in Konya, Turkey. Methods Stool samples of 94 patients aged 0 to 18 years sent from Emergency clinics and Pediatric outpatient clinics, Meram Medical Faculty Hospital Pediatric clinics, Konya Necmettin Erbakan University to Medical Microbiology Laboratory with a diagnosis of gastroenteritis between February and December 2018 were included in the study. Stool samples were stored at –80°C until the time of the analysis. Deoxyribonucleic acid/ribonucleic acid isolation from stool samples was performed with EZ1 Virus Mini Kit v2.0 (Qiagen, Hilden, Germany) using an automatic extraction system (BioRobot EZ1 system, Qiagen). The presence of astrovirus, rotavirus, adenovirus, norovirus (GI, GII), and sapovirus agents was investigated by the multiplex PCR method (Fast Track Diagnostics, Luxembourg) viral gastroenteritis kit. Results Viral gastroenteritis agents were detected in 56.3% of the patients. One viral agent was detected in 47 (50%) of these patients and at least two viral agents in 6 (6.3%) of them. Norovirus GII was detected in 20 (21.2%) of the children included in the study, adenovirus in 13 (13.8%), rotavirus in 11 (12.8%), astrovirus in 11 (11.7%), sapovirus in 4 (4.2%), and norovirus GI in 1 (1.06%). When the distribution of viral agents was examined by months, the most number of agents were observed (21; 35%) in May, followed by April and June (12; 20%). Considering the distribution of the prevalence of the agents by age, it was seen to be mainly between 0 and 12 months (42%). Conclusion Considering that the most common viral agent in our region is norovirus GII, it will be useful to investigate the norovirus that is not routinely examined in children who are admitted to clinics with the complaint of gastroenteritis. It will be appropriate to examine routinely adenovirus, rotavirus, and norovirus in the laboratory, especially in children with diarrhea and vomiting in the winter and spring months.

Comparison of an enzyme-linked immunosorbent assay for quantitation of rotavirus antibodies with complement fixation in an epidemiological survey

1978 ◽  
Vol 8 (3) ◽  
pp. 268-276
Author(s):  
L H Ghose ◽  
R D Schnagl ◽  
I H Holmes
Keyword(s):  
Immunosorbent Assay ◽  
Complement Fixation ◽  
Age Groups ◽  
Enzyme Reaction ◽  
Epidemiological Survey ◽  
Enzyme Linked Immunosorbent Assay ◽  
Marker Enzyme ◽  
Aminosalicylic Acid ◽  
Antibody Titers ◽  
Antibody Levels

The development of a micro-scale enzyme-linked immunosorbent assay (ELISA) with horseradish peroxidase as the marker enzyme for the detection and measurement of human rotavirus antibodies is described. A semipurified preparation of the serologically related simian agent, SA-11 virus, was used as the antigen. Test sera were reacted with antigen-sensitized wells in disposable poly-vinyl microplates. Any attached antibody was detected by the addition of peroxidase-labeled anti-species immunoglobulin (conjugate) followed by assay of the enzyme reaction with its substrate, hydrogen peroxide plus 5-aminosalicylic acid. This micro-ELISA was compared with complement fixation in a seroepidemiological study of the age prevalence of rotavirus antibody in Aboriginal and European populations living in the same outback area in Australia. The ELISA (results read with the naked eye) proved to be approximately 16 times more sensitive than complement fixation. Of Aborigines, 71% had rotavirus complement-fixing antibody, as compared to 45% of Europeans. By ELISA 100% of both populations had rotavirus antibodies. Mean antibody titers in the different age groups were higher in Aborigines than in Europeans. Antibody levels rose steeply throughout the first 20 years of life, remained high during the next 20 years, then increased again at least up to the age of 60 years. The micro-ELISA was practical, simple to perform, and more suitable than complement fixation for large seroepidemiological rotavirus studies. It also has potential for serodiagnosis of the disease, both in the laboratory and in the field.

PREVALENCE AND FEATURES OF GERIATRIC SYNDROMES TREATMENT IN OLD PATIENTS (CLINICAL AND EPIDEMIOLOGICAL STUDY)

2020 ◽  
pp. 331-338
Author(s):  
Е. Д. Голованова ◽  
Н. Е. Титова ◽  
Т. Е. Афанасенкова ◽  
И. А. Аргунова ◽  
Т. Н. Янковая ◽  
...  
Keyword(s):  
Geriatric Patients ◽  
Age Groups ◽  
Older Age ◽  
Age Dependence ◽  
Old Patients ◽  
Increased Risk ◽  
Planning Treatment ◽  
Risk Of Falls ◽  
Gender Characteristics ◽  
Outpatient Practice

Изучали распространенность хронических неинфекционных заболеваний (ХНИЗ) у пациентов пожилого и старческого возраста во взаимосвязи с синдромом старческой астении, распространенность саркопении в зависимости от гендерных особенностей и частоту встречаемости синдрома падений у пациентов старших возрастных групп с саркопенией. Анализировали особенности медикаментозной терапии в амбулаторной практике. Использовали метод комплексной гериатрической оценки у 528 пациентов, разделенных на три возрастные группы (65-74 года, 75-84 года, 85 лет и старше). Оказалось, что в структуре ХНИЗ у пациентов гериатрического профиля преобладают артериальная гипертензия, ИБС, а также их осложнения - ХСН и фибрилляция предсердий, частота встречаемости которых имеет выраженную возрастную зависимость и увеличивается у больных со старческой астенией. Для пациентов старших возрастных групп обоего пола характерно увеличение частоты встречаемости саркопении и связанного с ней повышенного риска синдрома падений, что необходимо учитывать при планировании лечебно-реабилитационных мер как в стационаре, так и при оказании первичной медикосоциальной помощи. We studied the prevalence of chronic non-communicable diseases (CND) in elderly and senile patients in conjunction with the syndrome of senile asthenia, the prevalence of sarcopenia depending on gender characteristics and the frequency of occurrence of the falls syndrome in patients with sarcopenia of older age groups. The features of drug therapy in outpatient practice were analyzed. The method of complex geriatric assessment was used in 528 patients divided into 3 age groups (65-74 years, 75-84 years, 85 years or more). It turned out that in the structure of CND in geriatric patients dominated: arterial hypertension, coronary heart disease, and their complications - chronic heart failure and atrial fi brillation their incidence has a pronounced age dependence and increases in patients with senile asthenia. Patients of older age groups of both sexes are characterized by an increase in the incidence of sarcopenia and the associated increased risk of falls syndrome, which must be taken into account when planning treatment and rehabilitation measures both in the hospital and when providing primary medical and social care.

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