The first large real-world study found that while Omicron reduced vaccine effectiveness against infection to 33% from 80% for Delta, its effect on protection against hospitalization was less...
[HASH=17316]#hospitalization[/HASH] [HASH=13428]#pfizer[/HASH] [HASH=63786]#omicron[/HASH]
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[HASH=17316]#hospitalization[/HASH] [HASH=13428]#pfizer[/HASH] [HASH=63786]#omicron[/HASH]
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