Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 21 2 2026 07 12 Investigating the Relationship between the Infection Caused by Toxoplasma gondii and the Rate of Infection with Covid-19 Disease and Its Severity 304 306 EN Maryam Mozouni Department of Medical Parasitology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Aliehsan Heidari Department of Medical Parasitology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Shaghayegh Alipour Aval Department of Medical Parasitology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Mehrab Asgary Valogerdi Laboratory Sciences Student, School of Paramedical Sciences, Alborz University of Medical Sciences, Karaj, Iran Amir Bairami Department of Medical Parasitology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Mahmood Bakhtiyari Department of Epidemiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Hossein Keshavarz Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran Iran 2025 10 16 2026 07 12 No Abstract. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/4790 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/4790/1505