This is not a breaking new. The research papers and all the oficial paperwork (like to get the FDA approval) only claim a 80%-90% reduction is hospitalization (that for me is a very good outcome).
I don't remember the numbers, but nRNA vaccines are in the range 80%-90%, perhaps a little more, and other vaccines like vector virus or inactivated virus have a lower efficiency like 60-70% of reduction of hospitalization.
All these numbers are obtained using randomized controlled trials.
There is an inference that they reduce death, it makes a lot of sense but it's difficult to get enough death in the RCT to get a significant result. Also, they reduce the length of the illness and the virus load, so it make sense to assume they lower transmission. But unless you make a few huge double blind test in a bunch of whole cities, it's very difficult to make a RCT. Also, does everyone has they own car or the city use mass transit with a 200 persons in a train wagon? Are the windows of the train wagon open or they have AC or they are closed and the AC broke a few years ago?
Comments
This is not a breaking new. The research papers and all the oficial paperwork (like to get the FDA approval) only claim a 80%-90% reduction is hospitalization (that for me is a very good outcome).
I don't remember the numbers, but nRNA vaccines are in the range 80%-90%, perhaps a little more, and other vaccines like vector virus or inactivated virus have a lower efficiency like 60-70% of reduction of hospitalization.
All these numbers are obtained using randomized controlled trials.
There is an inference that they reduce death, it makes a lot of sense but it's difficult to get enough death in the RCT to get a significant result. Also, they reduce the length of the illness and the virus load, so it make sense to assume they lower transmission. But unless you make a few huge double blind test in a bunch of whole cities, it's very difficult to make a RCT. Also, does everyone has they own car or the city use mass transit with a 200 persons in a train wagon? Are the windows of the train wagon open or they have AC or they are closed and the AC broke a few years ago?