> Research has proven that the nasal vaccine is the best choice. Coronavirus also attacks through the nose > injecting the vaccine intramuscularly only protect

> Research has proven that the nasal vaccine is the best choice. Coronavirus also attacks through the nose > injecting the vaccine intramuscularly only protects the lower lung. A nasal vaccine can protect both the upper and lower lung and can prevent transmission of the virus as well as an infection I'm not a biologist, but that just sounds strange.