[OPINION] Could Inhaled Vaccination be the Endgame for COVID-19 Elimination? 

Inhaled or aerosol vaccine delivery which mimics the natural route of COVID-19 infection, has attracted significant attention for the management of the disease and several clinical trials have been registered. The advent of inhalation as a potential route for vaccination of COVID-19 has a number of plusses compared to conventional administration. Nonetheless, several challenges need to be addressed.