In winter, the low temperatures and humidity create an ideal environment for viruses, leading to the spread of various infectious diseases. Other factors that contribute to the spread of infection include a weakened immune system due to the cold weather and children spending more time indoors.
The risk of infection cannot be avoided in group settings such as schools, childcare facilities, and educational facilities, but measures at home can help prevent the spread of infection.
This time, we will introduce measures to prevent influenza and viral gastroenteritis, which are common winter infections among children.
Don't be complacent about influenza
Influenza usually spreads around January, but this season's outbreak began around autumn last year. Although the number of reported cases is currently decreasing, Fukuoka City remains on alert, so caution is still required.
Influenza generally spreads after type A, followed by type B. Even if you have had the flu once, you may catch a different type, so continue to take basic precautions such as washing your hands and gargling.
A characteristic of influenza is the sudden onset of a high fever. Fever is the body's response to fighting the virus, so there is no need to lower the temperature unnecessarily. However, if the person seems to be in discomfort due to a high fever, try to lower their body temperature by cooling their body or using fever reducers prescribed by a doctor.
One thing to be careful of when it comes to children with influenza is influenza encephalopathy, which often develops within a few hours to a day after the onset of fever. If you notice any abnormalities in your child's responses or behavior, take them to a medical institution as soon as possible. It is important to lock the windows and keep an eye on your children.
Highly contagious viral gastroenteritis
If your child suddenly vomits or has severe diarrhea in the winter, it may be infectious gastroenteritis. The number of reported cases of infectious gastroenteritis is currently increasing in Fukuoka City as well.
There are various viruses and bacteria that can cause gastroenteritis, but viral gastroenteritis caused by norovirus and rotavirus is prevalent every winter.
The virus is transmitted through vomit and feces. Even after vomit has dried, the virus can remain in the air and cause infection, so be sure to dispose of the waste carefully.
Tips for Disposing of Vomit
●Since alcohol disinfection is almost ineffective, disinfect with diluted commercially available household bleach (sodium hypochlorite).
●No one other than the person handling the waste should come near.
●Use paper towels and wear disposable gloves, a mask, and an apron.
●Wipe gently from the outside to the inside, gathering towards the center.
●Wipe up any vomit etc. and then disinfect.
●Disinfect an area of 2m around the area, including walls.
●Ventilate the room.
Additionally, if diarrhea or vomiting continues, it is important to provide fluids to prevent dehydration. Avoid giving fluids immediately after vomiting, and give small amounts, starting from about one teaspoonful, frequently and repeatedly. It is also a good idea to use electrolyte drinks, which contain ingredients similar to body fluids and are easily absorbed.
Infants and young children in particular are susceptible to dehydration, so caution is required. Signs of dehydration include difficulty in taking fluids orally, lethargy, lack of urine production, and dry skin. Seek medical attention immediately.
To prevent infection within the home
There are many cases where children living in groups contract infectious diseases and then pass them on to their parents who are caring for them.
If someone in your family is infected, wear a mask as much as possible and be sure to wash and disinfect your hands thoroughly after coming into contact with them.
Also, to the extent possible, have separate rooms and bedrooms during the day and avoid sharing towels or dishes. Until recovery, the infected person should be the last to bathe, washing their bottom before soaking in hot water.
In addition to making it a habit to disinfect things that children tend to touch, such as doorknobs, switches, remote controls, toys, and smartphones, it is also important to create an environment that suppresses the activity of viruses, such as by humidifying and ventilating the room.
Summary
The key to preventing infectious diseases is to "prevent infection before it happens." In addition to basic measures such as washing your hands, gargling, and ventilating the room, it is also effective to take care of your health by getting enough nutrition and sleep. Let's get through this winter in good health by taking daily measures that can be done at home.
Reference information here
About influenza
About infectious gastroenteritis
*If you are unsure whether to see a doctor at night or on a holiday, please call #8000 (pediatric emergency medical consultation number).
*The content of this article is current as of December 2026.
●Article supervision: Pediatrician