A pause on new vaccines is not uncommon and should instead be taken as a testament to the caution being used by everyone during the coronavirus vaccine roll out, claimed an Arizona State University expert. 

<p>A pause on new vaccines&nbsp;is&nbsp;not uncommon and should&nbsp;instead be&nbsp;taken&nbsp;as a testament to the caution being used by&nbsp;everyone&nbsp;during the coronavirus vaccine roll out, claimed an Arizona State University expert.&nbsp;</p>

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