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Why might a physician be likely to develop bacteria that are resistant to all antibiotics?
The bacteria may have grown in an environment where it is introduced to the antibiotics therefore making it immune to the drugs.
How does resistance develop in bacteria?
Bacteria, like all organisms, have phenotypic variations. Some bacteria are resistant to antibacterial drugs and survive the onslaught of these drugs. They then go on to have progeny ( by fission ) that they confer this resistance on so that you have a new population of resistant bacteria.
Why does an antibiotic not work the same for all bacteria?
Bacteria also do evolve. If one bacteria is mutated, and survives an attack by antibiotic, he multiplies and forms more bacteria which are more resistant against antibiotic. As days of surviving antibiotics and multiplying eventually creates a bacteria which is resistant against it.
How is the presence of antibiotic resistance used as a marker in bacterial transformation?
Antibiotics will kill off all of the bacteria that have not mutated and formed a resistance to the drug. Those that have a resistance to the antibiotics will survive and multiply into many resistant bacterium. This continuously facilitates the production of new kinds of antibiotic resistant bacteria
Will oral cipro cure an ear infection?
There is no guarantee. Some bacteria have become resistant to some antibiotics. Cipro is fairly new and still very effective against most bacterial infections. Be sure to continue the antibiotics for as long as prescribed. If you stop early you will have killed only the weak bacteria and the strong ones that are resistant will be harder yet to kill.
Could mutated bacteria be resistant to antibiotics?
Yes. The flu strand of bacteria, for example, is always mutating into different forms, becoming immune to the same kind of anitbiotics. Therefore, different antibiotics are used all of the time.
Are there antibiotics for bird flu?
There are no antibiotics for the bird flu. Influenza (all types) is caused by a virus, and hence can't be treated with antibiotics (antibiotics only work with bacteria).
Are antibiotics being overused?
This is a very complicated question but yes, antibiotics are being used in high frequency in our society and at times, they are prescribed wrongly. Antibiotics do not treat viral infections and the common cold or flu is viral - but doctors write a prescription because they diagnosed it wrong or because the patient is pressuring the doctor for a antibiotic. This leads to bacterial resistance to that specific antibiotic and in some cases, resistance to the entire class of that antibiotic. So if you take amoxicillin wrongly and bacteria becomes resistant, it becomes resistant to amoxicillin and all penicillin class of antibiotics. This is why we are seeing the rise of highly resistant strains of bacteria in this world such as VRSA (Vancomycin resistant) or MRSA (Methicillin resistant) bacterial strains.
How do antibiotic resistant bacteria come about?
This term is misleading. The antibiotic "selects" bacteria that are not affected by it. If a person will grow bacteria on a petri dish and add an antibiotic to it, some bacteria may live and grow. This is actually a form of natural selection. The ones that will grow are resistance to the antibiotic. They have some way of not being affected. If a person takes a colony from the plate that has this resistance and grows it on another plate and add the antibiotic, all on the plate will be resistant.
What is a good reason to doubt the new antibiotics will cure all human disease?
Some antibiotics, such as penicillin, affect only certain types of bacteria but not other types.
Can a viruses be cured using antibiotics?
Yes. But only by antiviral antibiotics, not antibacterial or antifungal or antiprotozoal antibiotics. Most antibiotics are antibacterial: such as penicillin, sulfa, cipro, rocephin, etc. The Herpes Simplex virus is a virus that can be attacked by an antibiotic, such as acyclovir. Just as with antibacterial antibiotics, antiviral antibiotics will become less effective over time as the viruses mutate to become more resistant. Therefore, these antibiotics should be used as judiciously as the other types of antibiotics.
How does a bacteria populations become drug resistant A. Antibiotics remove drug-susceptibles individuals but kleave those that are drug resistant B. Natural slection drives bacterial population Chan?
all the above
