get it, jasem samari, sed and cima news agency . viruses, bacteria and microbes have strange shapes and are different from those that plague us in the outside environment . they are also resistant to most antibiotics. we want to know what is a hospital drug? a patient who is in the hospital after 48 to 72 hours of being in the hospital without the first sign of infection , and this infection lasts more than three days as an infection. antibiotic resistance is increasing in the world , and by the year 2050, more than 10 million people will die due to antibiotic resistance. and about two and a half percent of the country's gross domestic income has been lost due to antibiotic resistance , so about one billion dollars is the probable economic cost of this until the year 205 . in iran, unfortunately, it is common, sufficient dose is required and enough time, even if it can be done in a few days , according to the doctor's opinion, the antibiotic course should be taken at the end of the razi international conference center, which hosted