Theres no such thing as perfect vaccines. They all rely on your immune system to do the work. Vaccines just show it what to search for. It is litterally giving your immune system an advantage for very little risk. The earlier your immune system reacts, the less chance for the virus to propagate.
Theres no such thing as perfect vaccines. They all rely on your immune system to do the work. Vaccines just show it what to search for. It is litterally giving your immune system an advantage for very little risk. The earlier your immune system reacts, the less chance for the virus to propagate.
Perfect vaccines are also called “all-or-none” vaccines. They reduce infection rates to zero (for a given % subjects).
There are also imperfect/leaky vaccines.