Acute respiratory superinfections (ARS) induced by secondary nosocomia
l respiratory pathogens and characterized by the subsequent generaliza
tion of the process have been reported as one of the main contribution
s to pediatric inpatient mortality. The recurrent infections were obse
rved in all types of hospitals; they might be induced by the whole gro
up of respiratory pathogens, but adeno-, coronaviral and pneumococcal
ones are predominating. The ARS clinical picture showed various patter
ns determined both by the etiology of basic and recurrent infection an
d by a child's immunity. There was a correlation between the severity
of ARS and the level of specific immunoglobulins, especially of secret
ory origin.