Population dynamics of the United States and the Soviet Union

Article Abstract:

The rate of population growth is slowing in both the United States and the Soviet Union. These changes will affect the labor force, and the age, racial, and ethnic profiles of the two nations. The general populations of both nations are becoming older. In the US there will be an eight percent reduction in the number of 18-year-olds between 1989 and 1990, and not until 2001 will the population of 18-year-olds reach 1989 levels. In the Soviet Union, where the population of 18-year-olds has been decreasing since 1978, it will take until 2002 to regain the former level. The number of retirees has been growing in the US since the 70s, but the rate of growth will slow down in the 90s. In the coming decade, the Soviet Union, on the other hand, will be one of the fastest aging countries in the world. The slowing of the rate of growth of the labor force in these two countries may be viewed as an opportunity to reduce unemployment and raise the general level or well-being of the citizens. However, if the social and economic structures cannot adjust to the shifting demographics, then economic growth may seriously suffer. (Consumer Summary produced by Reliance Medical Information, Inc.)

United States, Soviet Union, Demographic transition

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A new arbovirus from Aedes albopictus, an Asian mosquito established in the United States

Article Abstract:

The mosquito species Aedes albopictus, which is native to Asia, was detected in Houston, Texas in 1985. Since then, it has been found in 160 counties in 18 states. This strain of mosquito carries a type of virus known as arboviruses, which cause infections characterized by a combination of the following symptoms: fever, rash, swelling of the brain, and internal bleeding. The arboviruses include those causing dengue fever, an acute illness characterized by fever, rash and severe head, back and muscle pain. Therefore, health officials are concerned about the presence of the mosquito Aedes albopictus in the US and disease transmission. The Aedes albopictus mosquito collected in Potosi, Missouri, and the arboviruses that it contained was studied. Ten strains of new arboviruses were isolated and identified as belonging to the Bunyamwera group (Bunyaviridae). The Aedes albopictus mosquito can live in both urban and rural environments, and has aggressive biting behavior. These characteristics may lead to the transmittance by this mosquito to humans of many arboviral diseases. (Consumer Summary produced by Reliance Medical Information, Inc.)

Disease transmission, Dengue, Dengue fever, Arbovirus diseases, Aedes albopictus, Aedes

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Ozone pollution in the rural United States and the new NAAQS

Article Abstract:

The US Environmental Protection Agency's (EPA) proposed NAAQS is likely to fundamentally alter perceptions of air pollution in the rural US and the policies used to manage rural air pollution. NAAQS is designed to control ozone concentrations, which can have negative health effects.

Standards, Management, United States. Environmental Protection Agency, Environmental health, Air pollution, Ozone, Rural health

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