RE: Valneva16 Dec 2021 11:59
Hi Bojo,
I work in drug development and can tell you a little about Valenva, maybe even answer your question.
A deactivated virus is the whole COVID virus itself. Deactivation usually means killing and it's an old but proven technology. One thing the RNA vaccines do not do is trigger a cellular (T cell response) which is a more usual way to prevent / kill viral infections. Antibodies generally block the virus entering cells and, if well engineered, can cause something called Phagocytosis where a type of immune cell (a Phagocyte, biologists have weird naming for stuff) kills the virus by engulfing it.
The RNA vaccines are great for a quick vaccine but in the long term a vaccine is needed that can produce a cellular response.
Will42