“…Certainly one would expect them to be relatively frequently reported from venereal disease clinics where longacting preparations have been in continued and widespread use for many years. Thomas, Landy, and Cooper (1948) reported no serious reactions inover 10,000 patients treated with penicillin (usually penicillin in oil-beeswax which was the first repository penicillin preparation). Treatment had to be stopped in only two cases, both on account of severe urticaria.…”