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CDC data shows highly transmissible delta variant is now the dominant Covid strain in the U.S.
By Berkeley Lovelace & Berkeley Lovelace Jr.
Canada will not welcome unvaccinated tourists for some time -PM Trudeau
By Julie Gordon
Is it more infectious? Is it spreading in schools? This is what we know about the Delta variant and kids
By Margie Danchin, Archana Koirala & Fiona Russell
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US sends Covid-19 surge team to southwest Missouri after Delta variant fuels rise in cases and hospitalizations
By Aya Elamroussi
Covid's delta variant: What you need to know to protect yourself - The Washington Post
By Lindsey Bever, Kim Bellware & Lateshia Beachum
Map: Tracking the Delta variant
By Mohammed Haddad
Here's what you need to know about the lambda Covid variant
By Holly Ellyatt
Study highlights need for full Covid vaccination to protect against Delta variant
By Elizabeth Cooney
Coronavirus Updates: Covid News: Biden Calls For New Vaccination Push (Published 2021)
By Michael D. Shear, Carl Zimmer & Sheryl Gay Stolberg