Is it normal for a child to repeatedly catch colds after starting kindergarten?

Cold is a respiratory illness caused by pathogens such as parainfluenza virus, adenovirus, and respiratory syncytial virus. Frequently catching colds after starting kindergarten is generally not normal.

If the living environment is well-ventilated, clean, and maintained at an appropriate temperature, if nutritional intake is sufficient, and if the child has strong resistance and immunity, repeated infections with these viruses should generally not occur. If frequent colds do occur despite these favorable conditions, it may be due to prolonged insufficient water intake, which can dry out the respiratory mucosa and weaken the respiratory system's protective function. Inadequate dietary variety, monotonous or poor-quality food leading to nutritional deficiencies and reduced physical fitness can also result in frequent colds. Poor ventilation in classrooms or excessive use of air conditioning, which may increase pathogen concentration in the air or impair nasal defense mechanisms, also makes children more susceptible to recurrent colds. In summary, frequent colds after starting kindergarten are not considered normal and may indicate inadequate care practices either at the kindergarten, at home, or both.

When such situations arise, it indicates that the child’s constitution is relatively weak. Besides timely medical treatment, improvements in environmental conditions and diet quality are necessary. Additionally, colds should be treated promptly to prevent prolonged illness.