ABSTRACT
Experts met in Copenhagen on 19 and 20 November 1996 to discuss the elimination of measles in Europe. European countries were assigned to four different categories on the basis of a recent survey conducted by the World Health Organization's Regional Offic
ABSTRACT
The calculations of the spinal column loading of miners are based on working time studies in operations with predominantly physical heavy work and elevated mechanical load. An elaborated model for the mining of ores, the applicability to underground workers and the comparability of loading quantities, based on the dosage measurement, are described.
Subject(s)
Mining , Physical Exertion/physiology , Posture/physiology , Spine/physiology , Biomechanical Phenomena , Energy Metabolism/physiology , Heart Rate/physiology , HumansABSTRACT
Analysis of comparative surveillance on influenza carried out in the USSR and the GDR is presented. It was shown that both in the nonepidemic and epidemic seasons the incidence of influenza in the USSR increased considerably earlier than in the GDR. In the nonepidemic season of 1978-1979, strains of different antigenic structure were in circulation in the USSR and the GDR, whereas the epidemic of 1979-1980 was induced by new drift variants of A(H3N2) virus, A/Bangkok/1/79 and A/Bangkok/2/79. The epidemic strains circulating in both countries were dissimilar biologically and antigenically. In the nonepidemic period in the USSR and GDR the circulating A(H1N1) strains were represented not only by drift variants A/USSR/90/77 and A/Brazil/11/78 but also by natural recombinants of A(H1N1), A/USSR/61/79, in which the internal proteins (P, NP, NS, and M) were analogous to those of A(H3N2).
Subject(s)
Disease Outbreaks/epidemiology , Influenza, Human/epidemiology , Seasons , Antigens, Viral/analysis , Genetic Variation , Germany, East , Hemagglutinins, Viral/analysis , Humans , Influenza A virus/immunology , Influenza, Human/immunology , USSRABSTRACT
The authors analysed the key-word cards of 3245 terminated orthodontic cases. Statistical data were obtained about treatment results, therapeutical aids, duration of treatment and co-operation of the patients. These data give a survey on the achievements of the orthodontic practitioner, the choice of his methods and the utilization of his therapeutical aids. The authors could draw certain conclusions as to their own work in practice. Furthermore, they realized that the use of key-word cards permits to evaluate critically their achievements and to perform collective scientific studies.
