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0 pointsthrowaway2011035y ago0 comments

Both of the mRNA vaccines (Pfizer and Moderna) require two doses. Don't know if the 2nd dose is the same as the first.

0 comments

Both the first and second doses of the mRNA vaccines are identical.

Could the first dose be one the Pfizer one and the second be the Moderna one? That might make logistics somewhat easier.

IfOnlyYouKnew5y ago

no. Might work, isn't tested.

ehsankia5y ago

Yep, my understanding is that the mRNA eventually degrade and disappear from your system, but your system requires more time to build enough antibodies.

zaroth5y ago

The actual study results show the vaccine is highly effective within 10 days of the first dose.

Honestly a bit shocked based on the results and the number of lives that could be saved by effectively doubling the number of available doses that they didn’t try to get it modified to a single dose regimen.

Seems to me like just another way the FDA has screwed up this whole rollout.

rleigh5y ago

Two doses is very common for vaccines because this is based upon how the immune system responds to real infections. The first dose will initiate a primary immune response. The second dose will act as a "challenge" to trigger a secondary immune response.

ed25519FUUU5y ago

It sounds like one dose is enough to make you much less likely to develop serious symptoms or symptoms at all, and two doses gives you close to immunity.

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