en حشره شناسی پزشکی Medical Entomology گزارش مورد Case Report/Research Letter <strong>Background and Purpose:</strong> Myiasis is an infestation of vertebrates caused by the feeding of fly larvae on the living or necrotic tissue of hosts. Human myiasis is more prevalent among people who live in unsanitary conditions or have close contact with domestic animals. In this report, a case of nasopharyngeal myiasis in a 63-year-old patient admitted to the intensive care unit is presented.<br> <strong>Case Presentation:</strong> A case of nasopharyngeal myiasis in a 63-year-old man with heart and respiratory failure in a hospital in Tehran City, Iran, is reported. By investigating the morphological characteristics of the isolated larvae and cultivating the pupa, Lucilia sericata was identified.&nbsp;<br> <strong>Conclusion:</strong> It is recommended that necessary operations be carried out to prevent the entry of insects, including flies, into hospitals and control of them.<br> &nbsp; Calliphoridae, Screw worm infection, Myiasis, Nasopharyngeal 149 154 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-1021-1&slc_lang=en&sid=1 Omid Dehghan omid_dehghan21@yahoo.com 100319475328460011152 100319475328460011152 Yes Tropical and Communicable Diseases Research Centre, Iranshahr University of Medical Sciences, Iranshahr, Iran. Sahar Azarmi 100319475328460011153 100319475328460011153 No Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Javad Rafinejad 100319475328460011154 100319475328460011154 No Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Eslam Moradi-Asl 100319475328460011155 100319475328460011155 No Department of Public Health, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran. Seyed Hassan Nikookar 100319475328460011156 100319475328460011156 No Department of Medical Entomology and Vector Control, Health Sciences Research Center, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran. Kamran Akbarzadeh kamran.akbarzadeh55@gmail.com 100319475328460011157 100319475328460011157 No Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.