The clinical course and outcome of COVID-19 are highly variable, ranging from
asymptomatic infections to severe disease and death. Understanding the risk factors of …

T‐cell exhaustion has been extensively researched, compared with B‐cell exhaustion and
NK‐cell exhaustion, which have received considerably less attention; and there is less of a …

Patients with viral illness are at higher risk of secondary infections—whether bacterial, viral,
or parasitic—that usually lead to a worse prognosis. In the setting of Corona Virus Disease …

Since an outbreak of severe acute respiratory disease caused by coronavirus 2 (SARS-CoV-
2) in the province of Wuhan, China, coronavirus disease 2019 (COVID-19) has …

Unusual mortality rate differences and symptoms have been experienced by COVID‐19
patients, and the postinfection symptoms called Long COVID‐19 have also been widely …

Co-infection of COVID-19 with other diseases increases the challenges related to its
treatment management. COVID-19 co-infection with parasites is studied with low frequency …

Toxoplasmosis has been categorized as one of the long-lasting protozoan parasitic
infections. It affects almost one-third of the world's population. In recent years, several …

Purpose This study aimed to determine the possible association between Toxoplasma
gondii infection and COVID-19 outcomes among 133 patients with an RT-PCR-positive test …

The breakthrough infection following COVID-19 vaccination has been a subject of concern
recently. Evidence suggests that COVID-19 vaccine efficacy diminishes over time due to …

Objective: The kinetics of immune responses to various SARS-CoV-2 vaccines in cancer
patients were investigated. Methods: In total, 57 cancer patients who received BNT162b2 …