We used the oral polio vaccine that has attenuated (aka ""live"") virus. A few years ago we switched to use only the injectable polio vaccine that has inactivated (aka "dead") virus.
For Covid-19, we use a mix of vaccines. Inactivated virus, vector virus and mrna. It was somewhat random, and each member of my family got a different mix. (I got AstraZeneca , AstraZeneca, Moderna.)
Reading only the description, a mrna vaccine looks safer than an attenuated virus vaccine. Anyway, all of them have been testen in clinical trials to ensure they are safe and effective. And anyway, the WHO is trying to use the polio attenuated virus vaccine as few as possible because there are some problems https://en.wikipedia.org/wiki/Polio_vaccine#Schedule
We used the oral polio vaccine that has attenuated (aka ""live"") virus. A few years ago we switched to use only the injectable polio vaccine that has inactivated (aka "dead") virus.
For Covid-19, we use a mix of vaccines. Inactivated virus, vector virus and mrna. It was somewhat random, and each member of my family got a different mix. (I got AstraZeneca , AstraZeneca, Moderna.)
Reading only the description, a mrna vaccine looks safer than an attenuated virus vaccine. Anyway, all of them have been testen in clinical trials to ensure they are safe and effective. And anyway, the WHO is trying to use the polio attenuated virus vaccine as few as possible because there are some problems https://en.wikipedia.org/wiki/Polio_vaccine#Schedule