Antibiotics won't work for infections caused by a virus.

This medication only works for vaginal fungal infections.

Dr. Cantekin concluded that amoxacillin did not work for middle-ear infections.

It will not work for viral infections (such as flu).

It will not work for other types of bacterial infections (such as in the blood) or for viral infections (such as the common cold or flu).

Dr. Martin E. Hugh-Jones, a veterinarian who is an expert on anthrax at Louisiana State University, said that although sentinels work well for viral infections like West Nile fever, he was not aware that any worked for bacterial diseases like anthrax.

Antibiotics do not work for viral infections.

Antibiotics don't work for viral infections.