Sentences with phrase «introduction of penicillin»

In black South Africans and in Zimbabwe, however, syphilis prevalence remained around 6 % until 50 years after the introduction of penicillin.

The introduction of penicillin in the 1940s led to the selection of S. aureus strains that carried the methicillin resistance gene.

Not exact matches

The major mechanism of resistance involves the introduction of mutations in genes encoding penicillin - binding proteins.

The discovery of penicillin about 90 years ago and the widespread introduction of antibiotics to combat infectious diseases have revolutionized human medicine.

Rather it was the widespread use of first generation beta - lactams such as penicillin in the years prior to the introduction of methicillin, which selected for S. aureus strains carrying the mecA determinant.