An Evolving Epidemic Head scientist of the antibiotic research center at McMaster University in Hamilton, Ohio, Gerry Wright, has studied the genes of 500 streptomyces strains, a type of bacteria, many of which had never previously been identified. All 500 strains held antibiotic-resistance genes and on average were resistant to 8 of 21 tested antibiotics (Sachs). With an average resistance rate as high as 67 percent in some of these streptomyces species, it is evident that antibiotic-resistance