This clinical trial is focused on studying the effects of a treatment called OM-85 in children who experience recurrent wheezing. Recurrent wheezing is a condition where children have repeated episodes of wheezing, which is a high-pitched whistling sound made while breathing. The study will compare the effects of OM-85 with a placebo, which is a substance with no active medication, to see if OM-85 can help reduce the frequency of these wheezing episodes.
The treatment being tested, OM-85, is made from lyophilized bacterial lysates, which are small parts of bacteria that have been dried and processed. These bacterial lysates come from several types of bacteria, including Haemophilus influenzae and Streptococcus pneumoniae. The study aims to determine if taking OM-85 daily can decrease the number of wheezing episodes in children aged 6 months to 5 years over a period of six months.
Participants in the study will be randomly assigned to receive either OM-85 or a placebo. The study is designed to be double-blind, meaning neither the participants nor the researchers will know who is receiving the actual treatment or the placebo. This helps ensure that the results are unbiased. The main goal is to see if OM-85 can effectively reduce the rate of wheezing episodes compared to the placebo during the treatment period. Safety and any side effects will also be monitored throughout the study.



Hungary
Poland