Abstract：
:The magnitude of antigenic change of the Hong Kong strains from the earlier influenza A2 strains was compared with previous antigenic changes among the type A viruses. Representative type A strains recovered from man during the years 1933 through 1969 were examined by reciprocal haemagglutination-inhibition, neutralization and neuraminidase-inhibition tests, using antisera produced in chickens. Phenograms or "family trees" were constructed, using numerical taxonomic methods based on cluster analysis of similarity coefficients. By the use of numerical taxonomic methods the inequality of the antigenic relationships among presently recognized classes becomes evident. Antigenic dissimilarities between A0 and A1 strains seen in phenograms constructed from reciprocal haemagglutination-inhibition and neutralization tests were of lower magnitude than dissimilarities between A1 and A2 strains and should not be given equal emphasis. The degree of antigenic dissimilarity between the Hong Kong-like strains and the early A2 strains was even less than that between A0 and A1.The authors stress the need for a new system for identifying and classifying human influenza A strains.
journal_name
Bull World Health Organjournal_title
Bulletin of the World Health Organizationauthors
Dowdle WR,Coleman MT,Hall EC,Knez Vsubject
Has Abstractpub_date
1969-01-01 00:00:00pages
419-24issue
3eissn
0042-9686issn
1564-0604journal_volume
41pub_type
杂志文章abstract：:Asian influenza appears to have reached India via Madras in May 1957. The main pandemic wave swept through the subcontinent within the next 12 weeks; cases occurring thereafter represent the permanent infiltration of the new virus into the population. Between 19 May 1957 and 8 February 1958 there were reported 4 451 7...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1959-01-01 00:00:00
abstract：:The plaque-neutralization method developed by Dulbecco and co-workers for the study of the virus of western equine encephalomyelitis in cultures of chick fibroblasts, though probably unequalled for accuracy, has not been adopted for general use in laboratories engaged in research on the arthropod-borne viruses, for tw...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1960-01-01 00:00:00
abstract：OBJECTIVE:To determine whether home visits for neonatal care by community health workers can reduce infant and neonatal deaths and stillbirths in resource-limited settings. METHODS:We conducted a systematic review up to 2008 of controlled trials comparing various intervention packages, one of them being home visits fo...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章,meta分析,评审
doi：10.2471/BLT.09.069369
更新日期：2010-09-01 00:00:00
abstract：:Paula Radcliffe tells Gary Humphreys about her journey from athlete to clean air advocate and her hopes for a clean air initiative launched by the International Association of Athletics Federation. ...
journal_title：Bulletin of the World Health Organization
pub_type： 面试,新闻
doi：10.2471/BLT.19.030319
更新日期：2019-03-01 00:00:00
abstract：:An outline is presented of progress in the development of health expectancy indicators, which are growing in importance as a means of assessing the health status of populations and determining public health priorities. ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:The eradication of poliomyelitis in Cuba, for which effective vaccines had to be acquired, is reviewed in this article. The strategy for eradication was based on mass immunization campaigns for the annual delivery of two doses of trivalent Sabin oral poliovirus vaccine (OPV). Except during the first campaign in 1962, ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:WHILE THE TWENTIETH CENTURY HAS PRODUCED GREAT DEVELOPMENTS IN THE EPIDEMIOLOGY OF YELLOW FEVER AND IN TECHNIQUES FOR ITS CONTROL IN URBAN AREAS, THE ESSENTIAL METHOD OF CONTROL HAS NOT CHANGED: it is still the elimination of the urban vector, Aëdes aegypti. The aim of those responsible for yellow fever control in Afr...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1954-01-01 00:00:00
abstract：:Eighteen patients with Plasmodium falciparum infection were studied in Port-au-Prince, Haiti, to monitor the response of the malaria parasite to sulfadoxine-pyrimethamine. In all infections the parasitaemia was cleared rapidly following treatment with standard dose of the drug combination; no recrudescence was observe...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:A very large private health sector exists in low-income countries. It consists of a great variety of providers and is used by a wide cross-section of the population. There are substantial concerns about the quality of care given, especially at the more informal end of the range of providers. This is particularly true ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:Two regimens of fluid and electrolyte therapy were studied in children with severe cholera and noncholera diarrhoea. In one, lactated Ringer's solution was the sole intravenous fluid, additional water, glucose, and potassium being given by mouth. In the other, three different intravenous solutions were employed to mee...
journal_title：Bulletin of the World Health Organization
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1972-01-01 00:00:00
abstract：:Since the development of insecticide-resistance and the consequent partial failure of the chemical approach to the control of disease vectors, interest in the biological approach has re-awakened. An aspect of the latter approach that is of great current interest is "autocidal control"-that is, the use of insects for t...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1963-01-01 00:00:00
abstract：:The objective of the study reported was to investigate the hypothesis that a diet low in protein would affect ability to detoxify pesticides. If this were so, the results would have application to use of pesticides in areas of the world where the diet is normally low in protein. To test the hypothesis, weanling albino...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1968-01-01 00:00:00
abstract：OBJECTIVE:To improve the use and dosage of antibiotics prescribed at Commune Health Stations in Viet Nam, and in so doing find out whether antibiotic dosage can be easily and reliably measured as a drug-use indicator. METHODS:All commune health workers from the 217 commune health stations in Hai Phong Province, Viet N...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:Tamiami virus produces a lethal encephalitis in suckling mice, and the illness is mediated, at least in part, by cellular immunity. Infection of extraneural organs, including lymphoid organs, is limited. The same virus produces a widespread infection in its natural host, the cotton rat, but neither symptomatic illness...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:The effects of flea control on the prevalence of (Pasteurella) pestis antibody rates in the California vole, Microtus californicus, were studied in San Mateo County, California, USA. In this area, which had shown antibody prevalence rates of 50% or more during epizootics in previous years, continuous flea control meas...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1971-01-01 00:00:00
abstract：OBJECTIVE:In 2000, a referral hospital in the Gambia accepted a donation of oxygen concentrators to help maintain oxygen supplies. The concentrators broke down and were put into storage. A case study was done to find the reasons for the problem and to draw lessons to help improve both oxygen supplies and the success of...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/blt.07.042994
更新日期：2008-01-01 00:00:00
abstract：:The study procedures and the results of blood pressure screening from 8 centres are reported. Data are also presented on age, sex, sexual maturity for girls, height, weight, Quetelet's index, smoking, and use of antihypertensive drugs for 92.1% of the 18 609 children born in 1964 in the 8 districts and surveyed in 197...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1981-01-01 00:00:00
abstract：:The international unit of colistin methane sulfonate has been defined by collaborative assay as the activity contained in 0.00007874 mg of the international reference preparation. The definition was based on results from 7 laboratories in 5 countries which carried out assays against their existing national standards. ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1973-01-01 00:00:00
abstract：:A batch of highly purified streptomycin sulfate has been examined by nine laboratories in six different countries and has been assayed against the First International Standard for Streptomycin. The material examined has been established as the Second International Standard for Streptomycin, and the International Unit ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1959-01-01 00:00:00
abstract：OBJECTIVE:To ascertain the reliability of applying the WHO Cardiovascular Risk Management Package by non-physician health-care workers (NPHWs) in typical primary health-care settings. METHODS:Based on an a priori 80% agreement level between the NPHWs and the "expert" physicians (gold standard), 649 paired (matched) ap...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/blt.06.032177
更新日期：2007-06-01 00:00:00
abstract：OBJECTIVE:Literature on human resources for health in Africa has focused on personal health services. Little is known about graduate public health education. This paper maps "advanced" public health education in Africa. Public health includes all professionals needed to manage and optimize health systems and the public...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/blt.07.045526
更新日期：2007-12-01 00:00:00
abstract：:Three experiments were carried out in field cages to test the principle of "transport" of a desirable gene or chromosome into a wild Culex fatigans population as a result of the sterility in cross-matings associated with cytoplasmic incompatibility. Cycling populations of Delhi origin were established in the cages and...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1976-01-01 00:00:00
abstract：:In 1963 the World Health Organization established a system for the collection and distribution of information on viruses. By 1973 laboratories in 45 countries were participating in this scheme. The present study is an analysis of the reports on adenovirus, influenza viruses A, B, and C, parainfluenza virus, respirator...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1974-01-01 00:00:00
abstract：:Egg-yolk lecithin prepared as described in the second edition of of the WHO monograph on cardiolipin antigens was known to be satisfactory, but documentation was incomplete. In this paper, the authors discuss results of comparisons between egg-yolk lecithin and lecithin of beef-heart origin, carried out in four separa...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1955-01-01 00:00:00
abstract：:The magnitude of the malaria problem in tropical Africa has been a deterrent to a large-scale control effort as long as the aim was conceived to be only a reduction in transmission. The focus on local priorities brought about by the primary health care approach has resulted in the formulation of a strategy of malaria ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:In the course of a research project on atherosclerosis, an international group of pathologists studied lesions in the aorta and coronary arteries obtained at autopsy from 3174 subjects from Czechoslovakia, Sweden and the USSR in an effort to determine what factors, recognizable in life, might be used to predict the pr...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1965-01-01 00:00:00
abstract：:To characterize the epidemiology of dysentery (defined as bloody diarrhoea) in Burundi, we reviewed national surveillance data and conducted a household cluster survey including two case--control studies: one at the household, the other at the individual level. We estimated that community incidences for dysentery (per...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:James Chau talks to Ana Lesher Treviño about the challenges faced in communicating about public health. ...
journal_title：Bulletin of the World Health Organization
pub_type： 新闻
doi：10.2471/BLT.19.030819
更新日期：2019-08-01 00:00:00
abstract：:Registration of births, recording deaths by age, sex and cause, and calculating mortality levels and differentials are fundamental to evidence-based health policy, monitoring and evaluation. Yet few of the countries with the greatest need for these data have functioning systems to produce them despite legislation prov...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：/S0042-96862005000800015
更新日期：2005-08-01 00:00:00
abstract：:Risk communication guidelines widely used in public health are based on the psychometric paradigm of risk, which focuses on risk perception at the level of individuals. However, infectious disease outbreaks and other public health emergencies are more than public health events and occur in a highly charged political, ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/blt.08.058149
更新日期：2009-08-01 00:00:00
