In studies of the oral flora associated with respiratory infection induced by exposure to bacterial aerosols, the source of the bacterial agene recovered from oral sample would be expected to change with the passage of time as influenced by the host’s reaction. Immediately following aspiration of a bacterial aerosol cells mechanically trapped on the mucous surfaces above the pharynx are normally transported to the pharyngeal region and then swallowed, as describe by Bloofield and Arnold e al.

Read more...