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Query: UMLS:C0006277 (bronchitis)
 6,338 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Surveillance of influenza in England and Wales is made by monitoring weekly data. Principal indices are deaths, sickness-benefit claims (SBC), laboratory reports and observations from general practitioners (GPs). The 12 winter 1968/9 to 1979/80 have been studied to see which indices best described size and timing of influenza epidemics. A method of plotting the data (called cusums) is suggested which makes it easier to see the effect of small epidemics. Cusums for GP statistics and respiratory deaths were found to be the most helpful indices for describing both size and timing of the epidemics, followed by total deaths and SBC, which were less specific to influenza, and influenza deaths, which lagged behind other indices. Deaths certified as pneumonia have been increasing over these years, whereas bronchitis deaths have been decreasing and these indices should not be used separately for monitoring. The laboratory reporting system is important. It confirms the presence of influenza virus in the community and indicates prevalent strains. Because it is a voluntary system with no defined population base the reports are not reliable numerically for estimating relative size of epidemics or for developing cusums. Cusum plots were unanimous in describing the winter of 1980/1 as one of little influenza activity.
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PMID:Influenza surveillance in England and Wales using routine statistics. Development of 'cusum' graphs to compare 12 previous winters and to monitor the 1980/81 winter. 705 29

During the years 1974 to 1979 a virological study on domestic poultry throughout Papua New Guinea was conducted involving clinical examination of diseased birds with subsequent attempted virus isolations and serological surveys of free village fowls and commercial poultry. Viruses isolated included those of Newcastle disease, infectious bronchitis, pox, avian encephalomyelitis and adenovirus. Clinical and pathological diagnoses of pox, avian encephalomyelitis, reticuloendotheliosis and Marek's disease were made. The serological survey included tests for Newcastle disease, influenza A, adenovirus, Marek's disease, pox, avian encephalomyelitis and infectious bursal disease virus. Antibody was demonstrated to all of these viruses except for bursal disease.
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PMID:Survey of some poultry viruses in Papua New Guinea. 710 63

Excess morbidity was studied during influenza A epidemics (1968-69, 1972-73) among children in a large prepaid group practice program. Excess rates of hospitalization for influenza-related conditions, primarily pneumonia and bronchitis, ranged from 5 per 10,000 (95 per cent confidence limits (CL): 1 to 9) for non-high-risk children to 29 per 10,000 (95 per cent CL: 5 to 53) for children with high-risk conditions. The relative increases in hospitalization rates were greatest for 5-14 year old boys: 278 per cent and 104 per cent increases for high-risk and non-high-risk boys, respectively. The absolute increase was greatest for 0-4 year olds. The excess rate of ambulatory medical care contacts, 2.6 per 100 (95 per cent CL: -1.6 to 6.8 per 100) was not statistically significant. Excess hospitalization rates among 0-14 year olds during epidemics were three to five times larger than those for persons between 15 and 64 years of age but only one-fifth the rate of persons over age 65.
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PMID:Impact of type A influenza on children: a retrospective study. 710 49

Viral diagnosis was performed using radioimmunoassay (RIA) for virus antigen in nasopharyngeal secretions (NPS) and complement-fixation (CF) tests of paired sera from specimens of 90 children hospitalized for acute respiratory infection. Major respiratory viruses sought for by both methods (adenoviruses, influenza A and B viruses, parainfluenza virus type 3, respiratory syncytial virus) were detected in 40 (44%) of the patients; 15% of the diagnoses were made by NPS-RIA alone. Serologic diagnosis of other viral infections was confirmed in six additional cases. In the different clinical entities a viral diagnosis was established as follows: pneumonia, 50%; upper or middle respiratory infection with no wheezing, 43%; acute laryngitis, 54%; and wheezing bronchitis, 29%. In each clinical entity the virus-positive and virus-negative patients had similar total leukocyte counts, mean C-reactive protein levels and mean erythrocyte sedimentation rates. There was no difference in the duration of hospitalization between the patients with positive and negative viral studies. It was not possible to divide the patients into clinical subgroups according to the presence or absence of detectable viral infection.
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PMID:Clinical evaluation of radioimmunoassay of nasopharyngeal secretions and serology for diagnosis of viral infections in children hospitalized for respiratory infections. 716 28

Some of the characteristics of the process of mortality decline in Latin America were studied for the 1955-73 period. General characteristics of mortality decline were examined and total and cause specific standardized death rates were examined in an effort to uncover the contribution of changes in the incidence of some diseases to the rate of decline in the initial stages of the process. The relationship between socioeconomic factors and total and cause-specific levels of mortality were also examined. Data on deaths by age groups and causes on various Latin American countries were collected from regular publications of the World Health Organization (WHO). Only those countries for which information was available at least at 1 point during the 1950s and at least once during the 1960s were included. Adult deaths (above age 5) were adjusted for completeness using techniques by Brass (1975) and Preston (1979). Causes of deaths were grouped into categories that allowed the comparability of the 6th, 7th, and 8th revisions of the International Classification of Diseases. Death rates specific for 5-year age groups were computed. The analysis supports the idea that the major contributors to the rapid process of mortality decline were, in this order: infectious diseases, influenza-pneumonia-bronchitis, and diarrhea. Respiratory tuberculosis and other diseases of early infancy were responsible for about 12% of the total decline. Of late there has been an apparent increase in deaths due to cardiovascular diseases and neoplasms, but cardiovascular diseases (probably of infectious origin) may have contributed positively to mortality decline, perhaps as much as 28% of the total decline (net of the effects of changes in the category of "ill defined" deaths). The association between the decline in malaria and the concomitant decline in other infectious diseases points to a confirmation of the hypothesis which attributed substantial weight to medical innovations because of the synergism among the diseases themselves. The source of the changes in mortality were found to correspond in almost equal measure to rising standards of living and to the contribution of exogenous factors: about 45% of the changes between 1955-73 were due to rising standards of living. Exogenous factors seemed to have left a more decisive imprint among countries in which malaria was endemic and within categories of such diseases (such as infections) which were most likely to be controlled without imposing the necessity of substantial transformations in standards of living.
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PMID:Mortality decline in Latin America: changes in the structure of causes of deaths, 1950-1975. 734 97

In a 16-year mortality followup of some 293,000 insured U.S. veterans, specific causes of death were studied in relation to smoking status. The main results confirmed earlier findings.Mortality ratios for cigarette smokers as compared with nonsmokers were 1.73 for all causes of death, 1.58 for all cardiovascular diseases, 2.12 for all cancers, and 4.31 for all respiratory diseases. The highest ratios (those greater than 5.0) were observed for cor pulmonale, aortic aneurysm, emphysema and bronchitis, cancer of the pharynx, cancer of the esophagus, cancer of the larynx, and cancer of the lung and bronchus. The greatest excess in deaths in terms of observed numbers minus expected was found for the cardiovascular diseases, in particular for coronary heart disease.Mortality ratios for ex-cigarette smokers who had stopped smoking for reasons other than physicians' orders were much lower compared with nonsmokers than the mortality ratios for current cigarette smokers: 1.21 for all causes, 1.15 for all cardiovascular diseases, 1.39 for all cancers, and 2.08 for all respiratory diseases. For most causes of death, the mortality ratios for ex-cigarette smokers who had stopped smoking for reasons other than physicians' orders varied inversely with the number of years of cessation. For some diseases, the mortality risk for the ex-cigarette smoker returned to normal almost immediately after the cessation of smoking, whereas for others, the return to normal was more gradual. The first group included stroke and the combined category of influenza and pneumonia; the second group included cardiovascular diseases as a whole and coronary heart disease. For still other diseases, although the mortality ratio declined with the length of time smoking was discontinued, substantial excess risks remained even after 20 years of cessation. In this third group were aortic aneurysm, bronchitis and emphysema, and lung cancer-diseases with very high mortality ratios for current cigarette smokers. Parkinson's disease remained the one disease that clearly exhibited a negative association with cigarette smoking.
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PMID:Smoking and causes of death among U.S. veterans: 16 years of observation. 738 6

Analysing the X-ray picture of childhood pneumonias from 8 X-ray parameters chosen by the authors has ascertained that bacterial pneumonias are most characterized by 2 X-ray signs: total segmentation and homogenicity of the lesion, whereas viral pneumonias by 4-5 or more out of the 8 chosen signs, among which there is partial segmentation and unhomogeneity of the lesion with increased lung outline within the lesion focus. This enables at least 96% probability to differentiate viral and bacterial pneumonias. The differences between pneumonic changes in viral respiratory infections are not so well-defined. But at the same time the X-ray pattern of RS infection most commonly includes an obstructive component (most infrequently in influenza and parainfluenza), partial segmentation and a limited area of infiltration (only 1-2 segments are involved). Adenoviral infections are most frequently characterized by increased lung outline beyond the pneumonic focus, indicating concomitant bronchitis beyond the pneumonic area, as well as by the atelectasis and extensive infiltration (involving 3-5 segments). Thus, the X-ray technique enables etiological rapid diagnosis during the first three days of the onset of the disease, providing timely initiation of etiothropic therapy.
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PMID:[Radiologic characteristics of lung pathology in children with acute respiratory diseases]. 753 94

In order to reduce the strain on the environment from the deposition of waste in landfills and combustion at incineration plants, several governments throughout the industrialized world have planned greatly increased recycling of domestic waste by the turn of the millennium. To implement the plans, new waste recycling facilities are to be built and the number of workers involved in waste sorting and recycling will increase steadily during the next decade. Several studies have reinforced the hypothesis that exposure to airborne microorganisms and the toxic products thereof are important factors causing a multitude of health problems among workers at waste sorting and recycling plants. Workers at transfer stations, landfills and incineration plants may experience an increased risk of pulmonary disorders and gastrointestinal problems. High concentrations of total airborne dust, bacteria, faecal coliform bacteria and fungal spores have been reported. The concentrations are considered to be sufficiently high to cause adverse health effects. In addition, a high incidence of lower back injuries, probably due to heavy lifting during work, has been reported among workers at landfills and incineration plants. Workers involved in manual sorting of unseparated domestic waste, as well as workers at compost plants experience more or less frequent symptoms of organic dust toxic syndrome (ODTS) (cough, chest-tightness, dyspnoea, influenza-like symptoms such as chills, fever, muscle ache, joint pain, fatigue and headache), gastrointestinal problems such as nausea and diarrhoea, irritation of the skin, eye and mucous membranes of the nose and upper airways, etc. In addition cases of severe occupational pulmonary diseases (asthma, alveolitis, bronchitis) have been reported. Manual sorting of unseparated domestic waste may be associated with exposures to large quantities of airborne bacteria and endotoxin. Several work functions in compost plants can result in very high exposure to airborne fungal spores and thermophilic actinomycetes. At plants sorting separated domestic waste, e.g. the combustible fraction of waste composed of paper, cardboard and plastics, the workers may have an increased risk of gastrointestinal symptoms and irritation of the eyes and skin. At such plants the bioaerosol exposure levels are in general low, but at some work tasks, e.g. manual sorting and work near the balers, exposure levels may occasionally be high enough to be potentially harmful. Workers handling the source-sorted paper or cardboard fraction do not appear to have an elevated risk of occupational health problems related to bioaerosol exposure, and the bioaerosol exposure is generally low.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:Sorting and recycling of domestic waste. Review of occupational health problems and their possible causes. 761 Mar 83

Occupational lung disorders can mimic other respiratory diseases. Recurrent upper respiratory irritation, bronchitis, flu-like syndromes, adult-onset asthma and interstitial lung disease can be caused by dust, gases and fumes. The diagnosis of a work-related respiratory disorder requires a high index of suspicion and a thorough occupational history. The work-up may have to be more extensive than that for nonoccupational lung disease, because the casual agent usually must be identified and secondary issues, such as disability, compensation and prognosis, need to be considered. Treatment must include measures to decrease or eliminate exposure to the causative agent.
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PMID:Common clinical presentations of occupational respiratory disorders. 765 31

This study was undertaken to characterize the epidemiology and clinical presentation of infection with Chlamydia pneumoniae in a population composed primarily of middle-aged and older adults. Pharyngeal swabs and acute and convalescent phase sera were obtained from outpatients presenting with signs and symptoms of an acute respiratory infection. Sera were examined using the micro-immunofluorescence (MIF) test to detect antibody to Chlamydia pneumoniae and complement fixation tests to detect Mycoplasma pneumoniae, influenza A virus, influenza B virus, respiratory syncytial virus and adenovirus. Pharyngeal swab specimens were cultured for Chlamydia pneumoniae and tested for Chlamydia pneumoniae by the polymerase chain reaction (PCR). A total of 743 patients with a mean age of 40.5 +/- 16.1 years were enrolled in the study. Twenty-one patients were serologically positive for acute Chlamydia pneumoniae infection in the MIF test. PCR was positive in 15 of the 20 serologically positive patients tested. Acute Chlamydia pneumoniae infection was identified in 3% (2/76) of subjects with pneumonia, 5% (12/247) of those with bronchitis, 5% (3/61) of those with sinusitis only and 2% (2/103) of those with pharyngitis only. Of the 21 patients with Chlamydia pneumoniae infection, seven (mean age of 33 years) had an antibody pattern suggesting a primary infection while 14 (mean age of 54 years) had a reinfection pattern. Patients with reinfection had milder disease than those with primary infection. PCR testing in the current study confirms the previously proposed serologic criteria of acute Chlamydia pneumoniae infection.
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PMID:Respiratory infection with Chlamydia pneumoniae in middle-aged and older adult outpatients. 788 46


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