CDC: “SARS-CoV-2 Variant Classifications and Definitions: Variant of Interest,” “SARS-CoV-2 Variant Classifications and Definitions: Variant of Concern,” “SARS-CoV-2 Variant Classifications and Definitions: Variant of High Consequence,” “Selected Characteristics of SARS-CoV-2 Variants of Concern: B.1.617.2,” “COVID Data Tracker: Global Variants Report,” “Selected Characteristics of SARS-CoV-2 Variants of Interest: B.1.427.”
The Washington Post: “What you need to know about the highly contagious delta variant.”
Yale Medicine: “5 Things To Know About the Delta Variant.”
CBS News: “Delta Plus: As U.S. grapples with Delta variant, India raises alarm over a new COVID strain mutated from it.”
Public Health England: “SARS-CoV-2 variants of concern and variants under investigation in England, July 9, 2021,” “Vaccines highly effective against hospitalisation from Delta variant.”
ZOE COVID Symptom Study: “What are the new top 5 COVID symptoms?”
The Lancet: “SARS-CoV-2 Delta VOC in Scotland: demographics, risk of hospital admission, and vaccine effectiveness.”
Imperial College London: “REACT-1 round 12 report: Resurgence of SARS-CoV-2 infections in England associated with increased frequency of the Delta variant.”
CNN: “Pfizer says it’s time for a Covid booster; FDA and CDC say not so fast.”
NBC News: “The delta variant: Everything you need to know.”
Science: “SARS-CoV-2 immune evasion by the B.1.427/B.1.429 variant of concern.”
The New York Times: “Covid’s Lambda Variant: Worth Watching, but No Cause for Alarm.”
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