Studies on Epidemics of Influenza
نویسندگان
چکیده
منابع مشابه
Timing and periodicity of influenza epidemics.
Although the annual cycle of summers and winters is a long-resolved mystery of astronomy, the annual antipodal waxing and waning of influenza epidemics is still an unresolved question in epidemiology. In 1981, R. E. Hope-Simpson, an astute British physician who maintained and analyzed detailed records of his patients and their diseases for more than three decades, observed that “Influenza outbr...
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OBJECTIVES Severe influenza can lead to Intensive Care Unit (ICU) admission. We explored whether ICU data reflect influenza like illness (ILI) activity in the general population, and whether ICU respiratory infections can predict influenza epidemics. METHODS We calculated the time lag and correlation between ILI incidence (from ILI sentinel surveillance, based on general practitioners (GP) co...
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Influenza complement fixation tests designed for use with ferret serum are described. Complement-fixing antigens derived from influenza ferret lungs were unsatisfactory due to their low content of soluble antigen; those prepared from mouse lungs or developing chick embryo membranes proved to be better antigenically and were reliable when the various reagents in the test were properly adjusted t...
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Seasonal influenza epidemics occur annually during the winter in the northern and southern hemispheres, but timing of peaks and severity vary seasonally. Low humidity, which enhances survival and transmission of influenza virus, is the major risk factor. Both El Niño and La Niña phases of El Niño-southern oscillation (ENSO), which determine inter-annual variation of precipitation, are putative ...
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The present article proposes a climatic approach to the study of the interaction between influenza spreading and climatic and meteorological factors in different climatic domains of the Iberian Peninsula. This association can be used to help in the prevention and mitigation of influenza epidemics. A biometeorological index has been defined and applied to the epidemic periods that took place in ...
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ژورنال
عنوان ژورنال: Journal of the Japanese Association for Infectious Diseases
سال: 1984
ISSN: 1884-569X,0387-5911
DOI: 10.11150/kansenshogakuzasshi1970.58.1025