“…The percentage of our strains demonstrating an increased resistance to penicillin would seem to be higher than that found in Europe (Lynn, Nicol, Ridley, Rimmer, Symonds, and Warren, 1970;Nielsen, 1970), but lower than that seen in Asia and western North America (Holmes, Johnson, and Floyd, 1967;Ronald, Eby, and Sherris, 1970;Reyn, 1969;Willcox, 1970;Moses, Desai, Bhosle, and Trasi, 1971). The results are similar to those reported from the Center for Disease Control in the United States (Martin, Lester, Price, and Schmale, 1970).…”