Bronchiolitis and bronchitis are characterized by cough , runny nose , and sore throat . There are no vaccines available for parainfluenza. Parainfluenza infections may be seasonal usually in the fall and winter. Avoiding crowds and limiting exposure during peak outbreaks may decrease the likelihood of infection.
Parainfluenza infections are most severe in infants and become less severe with age.
Limiting exposure such as day-care and full nurseries may delay infection until the child is older. There is no specific treatment for the viral infection. Specific treatments are available for the symptoms of croup and bronchiolitis . Most infections in adults and older children are mild and recovery takes place without treatment. Medical intervention may be necessary if breathing difficulties develop.