Investigating the Relationship between the Infection Caused by Toxoplasma gondii and the Rate of Infection with Covid-19 Disease and Its Severity - Mozouni, Maryam; Heidari, Aliehsan; Alipour Aval, Shaghayegh; Asgary Valogerdi, Mehrab; Bairami, Amir; Bakhtiyari, Mahmood; Keshavarz, Hossein (Iranian Journal of Parasitology, 2026)