Cochrane Library Covid-19This Special Collection has been created in response to the COVID-19 pandemic and is regularly updated. It aims to ensure immediate access to systematic reviews most directly relevant to the prevention of infection. It includes reviews that are relevant to the WHO interim guidance, as well as other potentially relevant reviews from three Cochrane Networks: Cochrane Public Health and Health Systems; Cochrane Musculoskeletal, Oral, Skin and Sensory; and Cochrane Acute and Emergency Care, and also draws on the knowledge of Cochrane groups in affected regions. Many reviews in this collection have associated Cochrane Clinical Answers (CCAs), with links provided.