How can infections become so resistant to antibiotics?

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matt
User offline. Last seen 2 years 8 weeks ago. Offline
Joined: 12/07/2009

I recently found out that the bladder infection I had that rose up into my kidneys was resistant to more than 8 types of antibiotics, hence the kidneys getting affected when penicillin was doing nothing for my bladder. I am now have Iv treatment on an antibiotic they hope will rid it after 2 weeks of pain. How can infections become so resistant that they avoid 8 types of Antibiotic?


zeldaslexicon
User offline. Last seen 2 years 9 weeks ago. Offline
Joined: 12/04/2009

Think Darwin. Bacteria have the ability to become resistant to antibiotics because it is a operate of their natural evolution. If you expose a group of bacteria to an antibiotic, most of them will be killed, but a few will outlive. The survivors then multiply and create more of themselves. Over time, bacteria can become resistant to numerous types of antibiotics. Overuse of broad-spectrum antibiotics, as well as misuse by patients (who often demand antibiotics for viral infections, or do not complete a course of antibiotics as is necessary) hastens this process. We now have multi-drug resistant forms of Tb as well as staph (mrsa). There is even a form of enterococcal bacteria that has developed a resistance to Vancomycin (vre).

STEVE S
User offline. Last seen 1 year 30 weeks ago. Offline
Joined: 07/07/2010

Bacteria become resistant to antibiotics by being exposed to levels of antibiotics that do not kill them. Once they have survived exposure, they can pass on their resistance.

There are three leading ways in which this can happen:
Prescribing too low a dose.
The patient not completing the full course.
Antibiotics used in farming to boost meat, milk or egg production.

Of these, the third is probably the most common cause of resistance.

The young lady above me (if you'll pardon the expression! has it exactly right.

Best wishes for a quick and complete recovery.

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