A new study shows that families who used alcohol-based gels had a 59 percent lower rate of gastrointestinal illnesses (GI) caused by germs spread from one family member to another. Gastrointestinal illnesses cause symptoms such as diarrhea and vomiting.
In the study, some families were randomly assigned to use alcohol-based gels and were provided with hand-hygiene educational materials. The comparison group only received the educational materials.
"This is the first randomized trial to show that a hand sanitizer reduces the spread of germs in the home," says researcher Thomas J. Sandora, MD, of Children's Hospital Boston, in a news release.
The study did not show a significant decrease in the number of respiratory infections in families that used the alcohol-based gels.
"We think that's probably because people were more diligent about using the sanitizer after a GI-related incident, such as using the bathroom or vomiting, than after a respiratory incident, such as nose-wiping or sneezing," says Sandora.
Hand Sanitizers Fight Stomach Bugs
In the study, researchers recruited nearly 300 families who were not already using hand sanitizers. Each family had at least one child aged 6 months to 5 years enrolled in day care.
Half of the families were randomly given hand sanitizer and educational materials on hand hygiene. They were told to put bottles of the gel around the house, such as in the bathroom, kitchen, and baby's room, and to use the hand sanitizer after using the toilet, before preparing food, and after diaper changes.