Hello, Welcome to HCM, thank you for posting. I understand your concern. Cough and cold with running nose are commonly caused by virus. It is very common in primary school children. Make sure your child has enough to drink. Low body fluid (dehydration) may develop if a child has a raised temperature (fever) and does not drink much. Usually a bout of cold resolves in seven to ten days but some can last for up to three weeks. Inhaling steam can also help relieve congestion and coughing. The safest way to do this with children is to sit in the bathroom with a hot shower/hot taps running. Zinc supplements are known to reduce the severity of symptoms of cold. Vit C can also be given. Hope the information is useful to you. Regards