Plastics are now the most widely used man-made substances and have become omnipresent in every aspect of our lives. From medical supplies and water bottles to food packaging, clothing, and construction materials. Discarded plastics play important role as breeding places for mosquitoes as vectors of different disease such malaria, dengue, West Nile virus, chikungunya, yellow fever, filariasis, tularemia, dirofilariasis, Japanese encephalitis, Saint Louis encephalitis, Western equine encephalitis, Eastern equine encephalitis, Venezuelan equine encephalitis, Ross River fever, Barmah Forest fever, La Crosse encephalitis, and Zika fever, as well as newly detected Keystone virus and Rift Valley fever. In addition the Food and Agriculture (FAO) and World Health Organization (WHO) recommended several chemicals for control of pests in agriculture, horticulture, veterinary,  stored product pests, and public health pests and vectors. The discarded plastics absorb these chemicals and transfer in to different parts of world. One pre- production plastic pellet can have up to 1 million times higher concentration of pesticides than an equal volume of seawater. The discarded plastics which absorb pesticides can act as breeding places of mosquitoes  and may cause insecticide resistance in the vectors. Travelling the discarded plastics from one region to the another region of the world through the seas, oceans and rivers  may transport unwanted  and harmful creature through he world. Plastic is persistent and  plastic doesn’t biodegrade.  No bacteria exists which can digest plastic polymers. Management  on appropriate use of plastics and  education to the people around the word about side effects of these materials will help for the safety and health of people in the world.
Keywords: Plastics, discard, side effect, world human health

Department of Entomology and Vector Control, School of Public Health and National Institute of Health Research, Institute for Environmental Research, Teheran University of Medical Sciences, Teheran, Iran. He has worked in the university for the past 25 years and is involved in research in Medicine and Pharmacology. Professor Vatandoost has served as a WHO advisor in different parts of the world. Traveling to 34 countries to take part in the scientific meetings as well as WHO Adviser or speaker. Switzerland (13 times), Germany (twice), Italy (twice), England (3 times) , Scotland, France (3 times), Norway, Sweden, Spain, Australia (twice),New Zealand, Japan,  South Korea, China, Malaysia (twice), India (3 times), Oman (twice), Egypt (3 times), Dubai, Turkey (twice), Qatar , Sudan (twice), Yemen, Saudi Arabia, Pakistan , Thailand (3 times), Sri Lanka, Ghana, Morocco. Jordan, Brazil (twice), Singapore, Lebanon, Syria, He is President of the Iranian Scientific Society of Medical Entomology and Vector Control, Editor-In-Chief of the Journal of Arthropod-Borne Diseases.  Head of Department of Chemical Pollutants and Pesticides, Institute for Environmental Research, Tehran University of Medical Sciences, To date, he has presented a total of 200 articles at international meetings, published a total of 661 scientific papers in different international journals. According to ESI evaluation he is the 1% of world scientists. Google scholar H-INDEX=55