Microbiological analyses were performed to isolate Salmonella from boiled milk, purchased in the milk shops (n=96) and Gouda cheese (n=96) purchased in milk shops and (before 2012) supermarkets (after 2012) in Musanze town. The presence of Salmonella was detected in 25 ml (or g) samples according to ISO 6579:2002+A1:2007 i.e. by nonselective enrichment in buffered peptone water (Oxoid), cultivation on modified semisolid Rappaport Vassiliadis (Oxoid), selective isolation on xylose lysine desoxycholate agar (Oxoid), and purification of presumptive isolates on nutrient agar (Oxoid), and finally, confirmation of typical colonies by the triple sugar iron test. Those
analyses were performed in 2012, 2013 and 2014.