Answer:
1- Which bacteria seem to be most frequently used in the production of food? Lactobacillus.
2- Why might the influenza vaccine be less effective than other vaccines? Becuse of how fast flu viruses mutate.
3- Which diseases of the gastrointestinal tract can be acquired by swimming in a pool or lake? Why are these diseases not likely to be acquired while swimming in the ocean? The diseases og the GI can be acquired in a swimming pool or lake are: giardia, cryptosporidiosis , qtitis externa, legionella and pseudomonas dermatitis. These are not likely to be acquired in the ocean because of the salt.
4-How is cholera transmitted? How does an earthquake promote transmission? Cholera is transmitted by vibrio cholerae O:1 and O:139 , through fecal-oral route or by eating or drinking contaminated food or water. During an earthquake transmission is promoted because of the contaminated water and inadequate sanitation.
Explanation
1- Lactobacillus is the bacteria most frequently used in food industrydustry, where there are many products.
2- Flu viruses are in constant change and mutation. Vaccines are more effective for some types of viruses. The effectiveness vary through the differents types and subtypes.
3- The salt in the ocean dehydrates cells, and affect them by killing them or stopping their growth. There are less bacterias tolerant to salt.
4- When there is an earthquake, WASH facilites might be affected by the disaster. When water contaminates with the cholera virus, it spreads really fast and easily.
