Day-by-day symptoms following positive and negative PCR tests for SARS-CoV-2 in non-hospitalized healthcare workers: A 90-day follow-up study

•30% of mild COVID-19 patients have reduced taste and smell after 90 days.•5% of mild COVID-19 patients have dyspnoea after 30 days.•Cough, sore throat, headache, muscle pain, and fever are not increased after 30 days.•Women and older persons are more susceptible to COVID-19 symptoms.