Inhaled Vaccines: The Future of COVID-19 Immunization
A new study led by Boston scientists suggests that delivering COVID-19 vaccines directly to the lungs using a device similar to an asthma inhaler can significantly improve immunity and protection in the respiratory system, potentially blocking infections more effectively. The research demonstrates that vaccines delivered to the lungs generate a larger army of immune cells in the breathing passages, intercepting and killing virus particles before they cause illness. This approach, along with nasal sprays, shows promise in boosting immune responses in the nose and lungs, where it matters most in preventing infection. However, further research and testing are needed to ensure safety and develop stable formulations for existing mRNA vaccines.