Efficacy of Pfizer/BioNTech Covid vaccine slips to 84% after six months, data show - STAT

1. Efficacy of Pfizer/BioNTech Covid vaccine slips to 84% after six months, data show  STAT
2. Pfizer data suggest third dose of Covid-19 vaccine 'strongly' boosts protection against Delta variant  CNN
3. Delta variant update: Pfizer says booster shot strongly protects against strain  NJ.com
4. A $27 Billion Vaccine Is Not Pharma's New Normal  Bloomberg
5. Q&A: What do I need to know about vaccinating my child?  Irish Examiner
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