Since people receiving this vaccine can excrete the virus in their nasal secretions in the days following vaccination, it is recommended to avoid this vaccine in immunocompromised patients and healthcare workers who are in contact with immunocompromised patients. Furthermore, it is recommended to avoid this vaccine in patients with severe asthma (defined as an individual on oral corticosteroid therapy or on high dose inhaled corticosteroids or an individual with wheezing on auscultation) (see section 3.4) and egg-allergic patients (see section 3.3).