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The symptoms of AR patients were also worse after infection than pre-infection (Figures S1-S4 and Table S4). Besides, the "infected patients" involved were all patients who recovered from SARS-CoV-2 infection, and there was a lack of patients who died from infection or were still experiencing severe illness. We found that nasal and ear symptoms and most other symptoms of AR patients infected with SARS-CoV-2 were more serious than those of non-AR patients. [Extracted from the article]

Increasing evidence has shown that COVID-19 might be transmitted via the bioaerosol route.[4] To date, time series cohort focuses on pollen's effect on COVID-19 infection was lacking. A multicenter time series study on pollen exposure and COVID-19 infection in five cities in China Thus, a multiple-adjust generalized additive model (GAM) including meteorological factors with time series design is established. [Extracted from the article]