Two doses of Pfizer, AstraZeneca COVID-19 shots effective against delta variant, study finds

Two doses of Pfizer-BioNTech or AstraZeneca-Oxford's COVID-19 vaccines are nearly as effective against the highly transmissible delta coronavirus variant as they are against the previously dominant alpha variant, a new study shows.

source https://www.cbc.ca/news/health/pfizer-astrazeneca-versus-delta-1.6113014?cmp=rss