/u/TheOnly0neLeft's posts in /r/askscience

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Why do some vaccines require a booster shot a few weeks later after the first one?

5809 upvotes

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Why did the smallpox vaccine cause a scar and why don’t other vaccines leaves scars?

26 upvotes

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Why isn’t there DNA in hair except at the roots?

6 upvotes

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What makes some animals capable of human speech?

1 upvotes

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What’s so special about COVID that means you can get it multiple times?

1 upvotes

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What determines whether or not swelling will occur on an injury and what function does swelling have?

1 upvotes

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What's the difference in MRA and MRI scans and what are both generally used for?

1 upvotes

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If humans never came into existence how many species of animals would have naturally gone extinct?

1 upvotes

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How does the R number differ for COVID-19 given that you can catch the virus more than once?

1 upvotes

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Why are only some animals capable of replicating human speech?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why do some vaccines require a booster shot a few weeks later after the first one?	5809
Why did the smallpox vaccine cause a scar and why don’t other vaccines leaves scars?	26
Why isn’t there DNA in hair except at the roots?	6
What makes some animals capable of human speech?	1
What’s so special about COVID that means you can get it multiple times?	1
What determines whether or not swelling will occur on an injury and what function does swelling have?	1
What's the difference in MRA and MRI scans and what are both generally used for?	1
If humans never came into existence how many species of animals would have naturally gone extinct?	1
How does the R number differ for COVID-19 given that you can catch the virus more than once?	1
Why are only some animals capable of replicating human speech?	1