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ORs for the association between species-specific parasite co-infection and COVID-19 severity. All models and those stratified by species-specific parasitic co-infection were analysed by univariable ordinal logistic regression analysis. *Multivariable models adjusted for sex, age, residence, education, body mass index, and comorbidities† (including diabetes, hypertension, cardio-vascular diseases, and chronic liver diseases). ORs=odds ratios. Lines are 95% CIs.
