Science Briefs

Emerging SARS-CoV-2 Variants
Emerging SARS-CoV-2 variants have been detected in the United Kingdom, South Africa, and Nigeria. Two of these variants are now circulating in multiple countries around the world.

Options to Reduce Quarantine for Contacts of Persons with SARS-CoV-2 Infection Using Symptom Monitoring and Diagnostic Testing
Quarantine can be a burden on public health systems and communities and may dissuade people from naming contacts. Reducing the length of quarantine will reduce the burden and may increase community compliance.

CDC Science Agenda for COVID-19: Building the Evidence Base to Inform the Ongoing Public Health Response, 2020-2023
The agenda guides the development of the evidence base needed to strengthen the public health actions, guidance, and policy essential to limit the spread and impact of SARS-CoV-2 and end the COVID-19 pandemic.

Scientific Brief: Community Use of Cloth Masks to Control the Spread of SARS-CoV-2
CDC recommends community use of masks, specifically non-valved multi-layer cloth masks, to prevent transmission of SARS-CoV-2.

Scientific Brief: SARS-CoV-2 and Potential Airborne Transmission
The principal mode by which people are infected with SARS-CoV-2 (the virus that causes COVID-19) is through exposure to respiratory droplets carrying infectious virus.