Background: We aimed to compare statistical techniques estimating the association between SARS-CoV-2 RNA in untreated wastewater and sludge and reported coronavirus disease 2019 (COVID-19) cases.
Methods: SARS-CoV-2 RNA concentrations (copies/mL) were measured from 24-h composite samples of wastewater in Massachusetts (MA) (daily; 8/19/2020-1/19/2021) and Maine (ME) (weekly; 9/1/2020-3/2/2021) and sludge samples in Connecticut (CT) (daily; 3/1/2020-6/1/2020). We fit linear, generalized additive with a cubic regression spline (GAM), Poisson, and negative binomial models to estimate the association between SARS-CoV-2 RNA concentration and reported COVID-19 cases.
Contemporary forms of slavery and associated adverse health effects are a serious, complex and often neglected issue within the New Zealand health sector. Slavery in New Zealand has most recently been associated with the fishing and horticulture industries. However, victims may be found in a number of other industry sectors, including the health and aged-care sectors, or outside of the labour market such as in forced, early (underage) and servile forms of marriage.
View Article and Find Full Text PDFThis paper examines the changing nature of New Zealand's seafood companies' production practices. The past 15 years has seen the offshore outsourcing of post-harvest fish gain unprecedented momentum. The growth in offshore processing is a further stage in an increasingly globalised fisheries value chain.
View Article and Find Full Text PDFThe "radon emanation" method of analysis for Rn and Ra in natural waters has been used by scientists for more than 30 years. We have examined the use of a new plastic bottle design as a viable option and improvement to traditional glass designs. The advantages of the new design over that used previously in our laboratory include a larger volume, lower blank, less fragile nature, and ease of handling in the field.
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