Efficacy and safety of Chinese herbal medicine to prevent and treat COVID-19 household close contacts in Hong Kong: an open-label, randomized controlled trial
ObjectivesTo evaluate the efficacy and safety of CHM in the prevention of COVID-19 infection and treatment for COVID-19 related symptoms.DesignProspective open-label randomized controlled trial.SettingParticipants’ home in Hong Kong.ParticipantsPartici…