# Multiple vaccines?

**URL:** <https://boards.straightdope.com/t/multiple-vaccines/926071>\
**Category:** The Quarantine Zone\
**Tags:** covid-quarantine\
**Created:** [November 20, 2020, 7:24pm UTC](https://boards.straightdope.com/t/multiple-vaccines/926071 "2020-11-20T19:24:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![panache45](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/panache45/32/64_2.png) [@panache45](https://boards.straightdope.com/u/panache45)\
**Post date:** [November 20, 2020, 7:24pm UTC](https://boards.straightdope.com/t/multiple-vaccines/926071/1 "2020-11-20T19:24:59Z")

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Suppose I get the first vaccine that’s available. Then a better vaccine comes out. Is there any advantage (or disadvantage) to getting the second one as well?

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**Author:** ![cochrane](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cochrane/32/10441_2.png) [@cochrane](https://boards.straightdope.com/u/cochrane)\
**Post date:** [November 20, 2020, 9:28pm UTC](https://boards.straightdope.com/t/multiple-vaccines/926071/2 "2020-11-20T21:28:18Z")

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The three vaccines announced so far (Pfizer, Moderna, and AstraZeneca) are all said to be 94-95% effective. I don’t think you can get better than that.

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**Author:** ![FigNorton](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fignorton/32/5619_2.png) [@FigNorton](https://boards.straightdope.com/u/FigNorton)\
**Post date:** [November 20, 2020, 11:32pm UTC](https://boards.straightdope.com/t/multiple-vaccines/926071/3 "2020-11-20T23:32:26Z")

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Frankly, I’m a little nervous about this new tech. Though I’ll probably dutifully get my shot, no way in hell am I mixing it up with other brand new vaccines. No one can answer your question, panache. How can we know interactions of brand new products other than theoretical guesswork?

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**Author:** ![PastTense](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pasttense/32/14550_2.png) [@PastTense](https://boards.straightdope.com/u/PastTense)\
**Post date:** [November 21, 2020, 12:42am UTC](https://boards.straightdope.com/t/multiple-vaccines/926071/4 "2020-11-21T00:42:10Z")

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Remember a certain percentage of people who have vaccinations get side effects. So the more vaccinations the more side effects.

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**Author:** ![kanicbird](https://avatars.discourse-cdn.com/v4/letter/k/5f8ce5/32.png) [@kanicbird](https://boards.straightdope.com/u/kanicbird)\
**Post date:** [November 21, 2020, 12:57am UTC](https://boards.straightdope.com/t/multiple-vaccines/926071/5 "2020-11-21T00:57:32Z")

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With the shingles vaccine the older one was so poor that it is recommended to get the newer one. I would assume something like that if it was found to likewise.