A single nasal spray vaccine could protect against all coughs, colds and flus, as well as bacterial lung infections, and may even ease allergies, say US researchers.
A single nasal spray vaccine could protect against all coughs, colds and flus, as well as bacterial lung infections, and may even ease allergies, say US researchers.
I believe it’s due to the over reaction. There ends up being too much of an inflammation reaction. The symptoms become enhanced. A mild cough can become a heavy, nagging cough.