>> I understand people being concerned about vaccine safety. The story that it usually takes years
>> to get approval that has happened in weeks does suggest the question as to why,
>> if it is completely safe, it isn't usually done a bit more quickly.
>>
>>
Because the massive amounts of money spent on developing a Covid vaccine and the number of labs who dropped everything else to work on one would not be affordable or practical for every known disease. Research findings that normally sat in somebody's in tray for a few months till they had the time to look at them were attended to straight away.
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