1.   And despite bacterial resistance, many older antibiotics like penicillin and tetracycline still work for many infections, limiting demand for new drugs.

2.   If scientists became aware of a problem with older antibiotics, they too could be banned.

3.   Pfizer said the drug is effective in four different kinds of infections, including those most resistant to older antibiotics.

4.   The goal was to have an approved anthrax drug that could kill strains of the bacteria that were resistant to the older antibiotics.

5.   Though several older antibiotics, including penicillin and doxycycline, were already approved for anthrax, the DOD zeroed in on Cipro.

6.   In fact, the researchers found that as newer antibiotics came into greater use, the prevalence of pneumococcus resistant to the older antibiotics decreased.

7.   Many of those infections are still treatable with older antibiotics.

8.   Synercid, an intravenous drug, is a combination of two older European antibiotics that delivers a one-two punch against bacteria.