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What is meant by cross resistance in bacteria against two different antibiotics?
Rukshi2009
when two different antibiotics are taken simultaneously againt multi bacterial infections cross resistance in the bacteria results
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∙ 15y ago
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Why don't you treat a virus with antibiotics?
antibiotics are only affective against bacteria, and a virus is different then bacteria
Antibiotics are ineffective against viral infections because?
Because antibiotics are designed (by nature) to effect bacteria. And bacteria and virsus are two very different things.
Why isn't flu treated with antibiotics?
Antibiotics are useful against bacteria; they do not do anything about viruses.
What are the reasons for emergence of antibiotic resistance?
Why is the human body resistant to antibiotics? Because synthetic medicines tend to be quite simple, the bacteria that should be affected by the antibiotic are able to build a defense against it.
Do antibiotics work against bacteria?
antibiotics are useful against bacteria because they help to kill off the nasty bacteria or they can also stop the bacteria from reproducing - so the illness doesn't get worse. this then gives your body time to make antibodies which will eventually distroy the bacteria. after this, you won't get the disease again because you are immune to it.
Why antibiotics are ineffective against viral disease?
Antibiotics are only for bacteria. Viruses need antiviral medicines.
Why are antibiotics not given unless a serious infection?
Bacteria can become immune to antibiotics and the antibiotics will not work in the future when you need them. They only work against bacteria and cold and flu are caused by viruses.
When are antibiotics not effective?
An antibiotic might not work because the symptoms are attributed to a virus rather than a bacterium. Antibiotics do not work against viruses.
What were the first true antibiotics used against pathogenic bacteria?
penicillins
Are antibiotics losing the war against bacteria?
yes, that is what theyre made to do
Why can antibiotics treat flu-like symptoms caused by bacteria but are ineffective against flu?
Because the way antibiotics treat those symptoms is by killing the bacteria that cause them. If the symptoms are caused by viruses, then antibiotics can't help since they are not made to be able to "kill" viruses, just bacteria. Flu viruses are not really living organisms like bacteria are. So viruses must be inactivated rather than killed. Antibiotics can neither kill nor inactivate viruses. They are created to be used to kill only specific bacteria, they do not kill every kind of bacteria, either. That is why there are so many different kinds of antibiotics. Antibiotics can treat flu-like symptoms caused by some bacteria, because the right antibiotics can kill bacteria. So although flu like symptoms are similar to those of the flu, they are caused by different microbes so are not cured in the same way.
Why do antibiotic work against bacteria but not viruses?
It is certainly possible to find a toxic cemical that kills everything, which would include bacteria, viruses, and us as well. The whole trick of antibiotics is to find something that does kill bacteria but doesn't harm the person whose bacterial infection we are treating. In order to do this we have to find some chemical reaction that bacteria use in their normal metabolic processes, but that people do not use. So antibiotics are very closely tailored to the specific biochemistry of target bacteria. Viruses have quite different biochemistry.
