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BackgroundA national serosurvey of U.S. blood donors conducted in partnership with the Centers for Disease Control and Prevention (CDC) was initiated to estimate the prevalence of SARS-CoV-2 infections and vaccinations.MethodsBeginning in July 2020, the Nationwide Blood Donor Seroprevalence Study collaborated with multiple blood collection organizations, testing labs, and leadership from government partners to capture, test, and analyze approximately 150,000 blood donation specimens per month in a repeated, cross-sectional seroprevalence survey.ResultsA CDC website (https://covid.cdc.gov/covid-data-tracker/#nationwide-blood-donor-seroprevalence) provided stratified, population-level results to public health professionals and the general public.DiscussionThe study adapted operations as the pandemic evolved, changing specimen flow and testing algorithms, and collecting additional data elements in response to changing policies on universal blood donation screening and administration of SARS-CoV-2 spike-based vaccines. The national serosurvey demonstrated the utility of serosurveillance testing of residual blood donations and highlighted the role of the blood collection industry in public-private partnerships during a public health emergency.

Uses environmental impact analysis as a unifying theme to provide students with real problem-solving experiences without neglecting the principles and theories of the basic scientific disciplines undergirding environmental science. Provides information about stressed stream analysis, which connects environmental impact analysis and Great Lakes ecosystem science. (Contains 54 references.) (ASK)

The U.S. Army Corps of Engineers is considering the feasibility of dredging the Outer Harbor and Buffalo River channels deeper to accomodate deeper draft vessels and/or to construct alternative means of trans-shipment of raw materials. An intensive study of the Buffalo River, Ship Canal and Outer Harbor of Buffalo, New York, was undertaken between April 1981 and May 1982 with the following general objectives: evaluate existing conditions in the river and harbor and to evaluate the biological impact of dredging the existing channel deeper in the Buffalo River and Outer Harbor; evaluate the biological impact of alternative proposals to dredging such as transshipment of raw materials by conveyor; evaluate the biological impact of removal of debris, old pilings, etc. along the Buffalo shoreline; evaluate existing conditions in potential disposal areas (Fig.2) and to evaluate the biological impact of spoil disposal in these areas; and provide a functional assessment of the ecological components studied and evaluate their significance with and without project implementation to the area ecosystem. In Volume 1, the Final Report, our analysis and interpretation of existing conditions and our assessment of impacts are presented. In Volume 2, the Data Report, the raw field data is presented in tabular form., See also Volume 2, AD-A115 899.