A deadly Listeria outbreak in the UK has been linked to a salmon-smoking processing factory in Scotland, despite product testing showing only low levels of contamination. The outbreak, which has resulted in at least three deaths and several other cases of illness, primarily affects vulnerable groups such as the elderly and pregnant women. The product from the affected company is compliant with regulatory limits but still poses a significant risk to these consumers. Authorities are emphasizing the importance of public health messaging and effective enforcement of food safety controls, while advising high-risk groups to thoroughly cook ready-to-eat smoked fish to reduce the risk of infection.