What types of drugs have helped reduce the death rate due to tube...

Question

What types of drugs have helped reduce the death rate due to tuberculosis infection, and why have they become less effective more recently?

Accepted Answer

Hi everyone. Let's look at our next question what makes the methicillin resistant staphylococcus aureus or M. R. S. A. More difficult to treat than other strains of staphylococcus aureus. Well we can recall that the M. R. S. A. Is a variety of the staph bacteria. That's short for staphylococcus aureus that has developed resistance not just a methicillin but too many common antibiotics. Um It's arisen in especially in hospital situations where you have many different patients um with different conditions. Staff is a really common bacteria that exists on our skin. So especially when you have um things like I. V. S. Or two or other things um penetrating the skin. It's really easy to get staph infections and you have so many patients with so many different infections being treated with different antibiotics. Um You have kind of ideal conditions for the development of multiple resistance is in bacteria that makes it really difficult to treat. Since you don't can't use your common antibiotics and have to go to more rare antibiotics that maybe have harsher side effects. So let's look for answer choices. See the correct description here choice A says the strain is greater in number. Well this is not correct. The staff is a very common bacteria um exists on most people's skin. So the non resistant staph bacteria is more common existing greater numbers thankfully. Um M. R. S. A. Is is fairly rare. So that's not our answer for why it's more difficult to treat. Choice B. Says the strain has primitive traits which are hard to treat. Well this is not correct um Antibiotic resistance is a fairly recent phenomenon since we've used antibiotics to treat infections. Uh So uh in primitive times obviously that wasn't a trait that was adaptive choice. C. Says the strain is resistant to many types of antibiotics. Well this is our correct answer choice. Um M. R. S. A. Is resistant to many types of antibiotics and that leaves doctors with very few choices to fight these infections. And often the antibiotics that can be used are um have very bad side effects are more dangerous and more harsh than the more common ones used more often that no longer work against M. R. S. A. Finally choice D. Says the strain has evolved into a new species. Well this is not correct, it's not a different species, it's still the staph bacteria. Um Just this this particular strain has evolved resistance to multiple antibiotics. So again, our correct choice. Why is it more difficult to treat choice? See the strain is resistant to many types of antibiotics. See you in the next video

What types of drugs have helped reduce the death rate due to tuberculosis infection, and why have they become less effective more recently?

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