Mtb Biology Case Studies

1. The graph is showing the survival rate of the different groups of rabbits over a span of four months. It shows how group two had a 100 percent survival rate (all five survived) over the course of four months. Group three had an eighty percent survival rate (four out of five survived). And group one had a twenty percent survival rate (one out of five survived). The rabbits in group one and two were emaciated because they were both in dark and confined spaces with little food. They were malnourished.

2. Group one had a twenty percent survival rate. Group two had a 100 percent survival rate. And, group three had an eighty percent survival rate.

3. When an animal is infected with the MTB virus, they will most likely die when that is not in

Koch saw that Mycobacterium tuberculosis was the main cause for the disease Tuberculosis. Denouncing the first hypothesis that tuberculosis was caused by the joining of bad blood between families. The rabbits that were used in this experiment were not all the same age or sex. Because tuberculosis effected people of all ages and sexes and with this experiment wanted to prove that theory. He could’ve given the rabbits a variety of food with better nutrients but he wanted to show the difference in health between the rabbits because he wanted to show that all people whether healthy or not were at risk of having tuberculosis. Dr. Trudeau wanted to find a way to help people with the disease live longer and not live in misery. Measuring the dead rabbits wouldn’t help the experiment because the point of this experiment was to see if the environment a rabbit was in progressed the disease or slowed it down. Making measuring the survival time very important in this experiment. I would’ve changed the health of the rabbits to show the difference the disease impacted healthy and non-healthy rabbits. Groups 1-3 would have been the same as Dr. Trudeau but replaced with strong healthy rabbits. I would also have 3 more groups with unhealthy rabbit in the same environments as the first 3 groups. This will allow us to see if the health of a person effects the chance of having tuberculosis and the outcome of those

HIV is virus that affects the immune system making a person more vulnerable to infections or disease. HIV has also been linked to AIDs an auto immune disease that also affects a person’s immune system. The Centers of Disease Control (CDC) states the people with HIV are at a higher risk of getting the TB disease. Because the people who are infected with HIV have slower Immune system making them more at risk of catching TB. During the 1980’s there was a surge of immigrants coming to the United States that ranged from about "3 million to 5 million immigrants” from 1980 to 1986. This was important because HIV and AIDs were more common in others countries than it was in the United States. The rush of immigrants may have brought the increase of TB because some may have been affected with HIV or TB before coming to the United States. Starting the Domino Effect around the U.S. causing the massive increase of TB cases there. Places such as prisons and homeless shelters are more susceptible of catching diseases such as TB because of the unsanitary conditions and the congestion of people in those facilities. The increase of cases in prisons are like The Rabbit Island Experiment. The infected rabbits were confined in one spot had a higher percentage of deaths (Group 1) versus the other two groups.