Unlike American recommendations which suggest to avoid LAIV in all asthmatic patients[19 ], the National Advisory Committee on Immunization (NACI) of the Public Health Agency of Canada (PHAC) recommends this vaccine in asthmatic patients except those with severe asthma defined as asthmatic individuals on oral corticosteroids or on high dose inhaled corticosteroids or asthmatic individuals with wheezing on auscultation[4].