Do infants suffer with more respiratory infections?

Answer 1

Infants, much like the elderly, are more susceptible to respiratory infections due to their immature immune systems. To be honest, I don't know that necessarily infants end up contracting more respiratory infections than that of small children/toddlers. Their susceptibility is largely based on their exposure. Additionally, infants are obligatory nose breathers, therefore respiratory infections have a more significant effect because they are not designed to be able to breathe out of their mouth when their nasal passages are clogged from secretions. This is why RSV in infants can lead to hospitalizations and the need for supplemental oxygen during the peak of the virus, whereas if an otherwise healthy adult were to contract RSV it would be diagnosed as a common cold and simply run its course.