Two Pfizer, AstraZeneca doses work against Delta variant: study - Al Jazeera English

1. Two Pfizer, AstraZeneca doses work against Delta variant: study  Al Jazeera English
2. Study shows two doses of Pfizer, AstraZeneca vaccines effective vs. Delta COVID-19 variant | ANC  ANC 24/7
3. Covid-19 global updates: Two doses of Pfizer and AstraZeneca coronavirus vaccines effective against delta variant, study says  The Washington Post
4. Two Pfizer, AstraZeneca doses work against Delta: study  Yahoo Singapore News
5. Coronavirus digest: 2 Pfizer doses 'effective' against delta  DW (English)
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