Comparison of medical waste management methods in different countries: a systematic review

Medical waste status is a severe public health problem worldwide. Proper medical waste management is of paramount importance. However, there is insufficient information about medical waste management and lack of management in different countries. The aim of this research was to investigate and evaluate the present status of medical waste management in different countries. We systematically searched Embase, PubMed/MEDLINE, Scopus, PubMed Central, Google Scholar databases, as well as medRxiv using the following keywords: medical waste, waste management, disposal, healthcare per-capita generation, gross domestic product (GDP), and hospital. A total of 38 eligible articles were identified. Correlations were calculated between the amount of medical waste generated (kg bed.day^-1) vs. GDP per capita ($) and ranking of healthcare system performance. A negative correlation was found between medical waste generation rate and ranking of healthcare system performance. According to the findings of this study, the medical waste generation rate in different countries ranged from 0.14 to 6.10 kg bed.day^-1. About 25% of countries segregated medical waste, and about 17% used standard storage for all medical waste. Shortcomings were also found in waste collection, storage, transportation and transfer, and disposal of medical waste management activities in different countries. Only about 25% of countries simultaneously used three techniques, such as autoclaving, incineration, and landfill for disposal and treatment of medical waste, and 91% used incineration method. This study highlights an essential need for particular medical waste management guidelines and regulations, technologies, knowledge and financing to upgrade medical waste management worldwide. This study can be considered to be a good guide for further research on medical waste management in developing and developed countries.