coli outbreak, with no known restaurant our social event being in common with any cases. This suggests that a grocery store supplier most likely had a contaminated batch of either lettuce or alfalfa. This E. coli, was most likely transmitted by a food handler somewhere along the grocery supply chain. Produce suppliers should be targeted as the next probable source of the virus. Question 8A Finding controls for this study would

Ecoli Escherichia coli (E. coli) is notorious for its adverse effects on the human body. A bacterium that normally lives in the stomach, some strains of E. coli can cause illness such as diarrhea. The strains most harmful to human beings include E. coli O157:H7 (Mayo Clinic Staff, 2011). Food and water contaminated with these harmful strains of E. coli are usually the means by which the bacteria is transmitted; adults

outbreaks of E. Coli arising from inappropriate handling of food. In May, 2010, for instance, an Escolar outbreak forced the recall of lettuce in 23 U.S. States, most of it destined for supermarket and restaurant salad bars. This is critical in America today in which almost 50% of meals are prepared and eaten outside the home. So many different products are used to prepare meals in fast-food and convenience

Question 14 The main criteria that should be considered is the type of infection based on microbiological evidence. Additionally, it is important to determine whether or not there was onsite mishandling which may have led to E. coli being present on particular products. The scope of the outbreak would also be important, as it would show either a local outbreak, or a more widespread one that would indicate a larger producer. Question

"Elimination of these and other pathogens from the lower respiratory tract is made possible by an effective innate immune response, which is necessary yet potentially dangerous to the infected host." E. coli Outbreak: There have been numerous E.coli outbreaks over the years. Pakalniskiene, Falkenhorst, Lisby, and Madsen (2009) studied one of the larger single source outbreaks. On November 11th, 2006, there was an outbreak in Greater Copenhagen, Denmark. The director of

Lac Operon Genetics Practical 2. Analysis of wild type and lac operon mutant strains of the bacterium Escherichia coli Complete the results tables below using the data you obtained in the practical. Describe the size, colour and eosin sheen of the colonies on the EMB plates in Table 1 below. Strain Size Colour Eosin sheen WT Large colonies purple Strong eosin sheen H Large colonies purple Weak eosin sheen J Small colonies pink No eosin sheen K Small colonies pink No eosin sheen Fill in the fluorescence results for NA+glu