While that's true, I think what MSH meant was, "Stop giving out antibiotics to every person with a sinus cold and reserve them for serious dangerous infections".
Also, stop giving them to livestock. If you're a bacterium, and you're spawning in an environment which is utterly awash in antibiotics, eventually Nature is going to make some of your progeny resistant. And since they won't be competing for resources with all the other millions of far-less-harmful bacteria that would be present in a normal environment, they'll go absolutely apeshit once they achieve that resistance.
This is why things you get things like MRSA outbreaks in hospitals. The modern hospital is so awash in antibacterial soaps, fabrics, and drug-soaked patients that it doesn't even have most natural harmless bacteria that you'd find anywhere else. So when a MRSA bacteria gets into the environment, it's like letting a kid into a candy store without any other kids to compete with.
@Aqizzar: I think public health officials would agree that TB patients getting antibiotics isn't the problem, it's all the OTHER people getting antibiotics for conditions that, while non-trivial, don't necessarily warrant antibiotics. Sinus colds, ear infections, that sort of thing.
The problem is (at least in the United States), healthcare is a free market commodity. If the patient wants antibiotics, and you refuse to prescribe them, they're just gonna go find another doctor who will give them. And people have generally been led to believe that antibiotics are a good thing. Hell, look at how many products there are out there which are antibacterial (Kleenex, wipes, hand soaps, etc.) While those aren't using antibiotics, they still have two negatives:
1. It reinforces this idea that all bacteria are BAD and need to be wiped out. Sterile = Good, and bacteria (which we've been living with in our environment since before we came down out of the trees) = bad. The whole "probiotics" thing is starting to help counteract that a little bit but there's still plenty of fear-mongering in advertising for these kind of products.
2. Antibacterial products kill off naturally occuring harmless bacteria in the environment, which reduces competition pressure on serious pathogens (see above).
And if you've got a kid who's screaming in agony because they have an ear infection...it's hard to tell their parents that they've gotta suck it up so that we don't eventually create drug-resistant superflu or something. They just want you to give the kid some goddamn Cipro so he gets better.
I'll admit, I'm as guilty as the next person. I get bad sinus colds a couple of times a year, and the doc usually just gives me a 7-day batch of amoxicillin or Cipro and calls it a day. The last couple of times, I've managed to just tough it out, but it sucks.