- Israel says Pfizer Covid vaccine is just 39% effective as delta spreads, but still prevents severe illnessCNBC
- Pfizer vaccine is 88% effective against COVID-19 Delta variant: studyNew York Post
- Pfizer Shot Halts Severe Illness, Allows Infection in IsraelBloomberg
- Covid vaccine: Eight-week gap seen as sweet spot for Pfizer jab antibodiesBBC News
- Korea is delaying second Pfizer, Moderna shots — is it safe?The Korea Herald
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