Both found no evidence at that time to support that vitamin D can improve COVID-19 outcomes. The SACN rapid review is available at https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/944108/SACN_June2020_VitaminD_AcuteRespiratoryTractInfections.pdf The NICE evidence summary was available at https://www.nice.org.uk/advice/es28 In December 2020, NICE, SACN, and Public Health England published updated guidance on vitamin D in relation to COVID-19 following a rapid review of recent evidence.