معظمها ليس بجديد والأطباء يقتنعون بالتحول إلى مضادات جديدة  ربما بسبب تعلمهم وتدربهم الطبي الذي لم يكون كافيًا وجيدًا. 
most of them are not new and the physicians are convinced with transition to new antibiotics maybe due to their medical education and training that were not enough and good.  