Jaroslava Orosová, Jaroslava Orosová, ml.
Acute respiratory infections are the most common cause of affections and the third mortality cause, worldwide. They are the main cause in postnatal period, in child age. Yearly two million children under age of five are estimated to die due to acute respiratory infections, mostly in third world countries. Respiratory viruses causing mostly acute respiratory infections in early childhood are considered as the main cause of airway hyperactivity and episodes of expiratory wheezing. They cause increased mortality in patients with asthma, cystic fibrosis and other chronic respiratory diseases, such as COPD. They cause the acute asthma exacerbation within 85 % in child and 75 % in adult population. Among the most serious are Respiratory Syncycial Virus (RSV) and Rhinoviruses (human Rhinovirus, hRV), by which, mostly children in the first two years of age are infected. RSV causes a severe acute bronchiolitis.