Udgivet den 07/07/202107/07/2021Pfizer vaccine protection takes a hit as Delta variant spreads, Israeli government says – CNN www.cnn.com/2021/07/06/health/israel-pfizer-efficacy-delta-variant-intl/index.html
Udgivet den 07/07/202107/07/2021Pfizer Vaccine in Israel: How It Works Against Delta Variant – The New York Times www.nytimes.com/2021/07/06/science/Israel-Pfizer-covid-vaccine.html
