std::getline(if_stream, line);
            lines = atoi(line.c_str());
            std::vector <std::string> new_compounds;
            for(int i = 0; i < lines; i++){
                tokenized.clear();
                new_compounds.clear();
                getline(if_stream, line);
                tokenize(line, " ", tokenized);
                std::string new_ID = tokenized[0];
                std::string new_name = tokenized[1];
                std::string new_manufacturer = tokenized[2];
                int count = atoi(tokenized[tokenized.size() - 1].c_str());
                for(int i = 3; i < tokenized.size() - 1; i++){
                    new_compounds.push_back(tokenized[i]);
                }
                if(tokenized[0] == "P" || tokenized[0] == "M"){
                    RNA new_vaccine_(new_ID, new_name, new_manufacturer, new_compounds);
                    //new_vaccine_pair = make_pair(&(new_vaccine_), count);
                    //cout << *new_vaccine_pair.first << " " << new_vaccine_pair.second << std::endl;
                    new_center.set_vaccine(new_vaccine_, count);
                    //std::cout << new_center << std::endl;
                }else{
                    if(tokenized[0] == "AZ"){
                        ViralVectorBased new_vaccine_(new_ID, new_name, new_manufacturer, new_compounds);
                        //new_vaccine_pair = make_pair(&(new_vaccine_), count);
                        new_center.set_vaccine(new_vaccine_, count);
                    }
                }
            }