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 * [COVID-19 dynamics after a national immunization program in Israel](https://www.nature.com/articles/s41591-021-01337-2#Sec2) — Nature, 19 Avril 2021
 
+## Cas des variants
+
+Le vaccin Pfizer montre une bonne efficacité contre les variants B.1.1.7 (dit "anglais") et B.1.351 (dit "africain")
+
+* [BNT162b2 vaccine induces neutralizing antibodies and poly-specific T cells in humans](https://www.nature.com/articles/s41586-021-03653-6) — Nature, 27 Mai 2021
+
 ## Autorisations et recommandations
 
 | Pays / Zone | Document(s) |