Abstract: a Reanalysis: Do Hog Farms Cause Disease in North Carolina Neighborhoods?

Mar 27, 2023

Abstract: A reanalysis: Do hog farms cause disease in North Carolina neighborhoods?

A 2018 publication reported that communities living near hog Concentrated Animal Feeding Operations (CAFO) in North Carolina, USA have increased negative health outcomes and mortalities. While the authors stated that the associations do not imply causation, speculative interpretation of their results by media and subsequent use as evidence in lawsuits caused detrimental effects on the swine industry. We repeated their study using updated data to evaluate the strength of conclusions and appropriateness of methods used with the ultimate goal of alerting on the impact that study limitations may have when used as evidence. As done in the 2018 study, logistic regression was conducted at the individual level using 2007-2018 data, while presumably correcting for six confounders drawn from zip code or county-level databases. Exposure to CAFOs was defined by categorizing zip codes into three by swine density; where, >1 hogs/km2 (G1), > 232 hogs/km2 (G2), and no hogs (Control). Association with CAFO exposure resulting in mortality, hospital admissions, and emergency department visits were analyzed related to eight conditions (six from the previous study: anemia, kidney disease, infectious diseases, tuberculosis, low birth weight, and we added HIV and diabetes).

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Video: Trade Uncertainty and Pork Growth - Cam Dahl

In this episode of The Swine it Podcast Show Canada, Cam Dahl, General Manager of Manitoba Pork Council, discusses how trade uncertainty affects growth across Canadian pork production. He explains why CUSMA, market diversification, non-tariff barriers, access to capital, labor needs, and producer advocacy all matter as the industry plans for investment, exports, and long-term competitiveness. Listen now on all major platforms!

"Trade uncertainty makes access to capital difficult when producers and processors are ready to invest and grow."

Meet the guest: Cam Dahl / cam-dahl-58115832 is the General Manager of Manitoba Pork Council. He has extensive leadership experience across Canadian agriculture, including Cereals Canada, the Canada Grains Council, Manitoba Beef Producers, and the Canadian Grain Commission. His work focuses on policy, advocacy, trade, business development, and strengthening market opportunities for Canadian producers. Learn more from Cam Dahl on The Swine it Podcast Show Canada, available on all major platforms.