What is the strategy to distinguish between hay fever/pollen allergy and COVID-19 infection?
Clinical history is very helpful to identify seasonality- and exposure-related symptoms driving the diagnosis of pollen-induced allergic rhinitis. An atopy test (in vivo or in vitro)reinforces the diagnosis. However, COVID-19 can be superimposed on allergic rhinitis symptoms.108 Symptoms such as fever, fatigue and sudden loss of smell, are suggestive of COVID-19 and should be closely monitored.