Aim: To determine the prevalence and to estimate factors associated with food hypersensitivity in young children of the Lviv region in Ukraine.

Methods: A prospective cross-sectional survey study was conducted between 2016 and 2017 in the Lviv region of Ukraine. A specially designed questionnaire about food hypersensitivity of young children developed and validated by M. J. Flokstra-de Blok was used after translation into the Ukrainian language. The questionnaire included 34 questions, grouped into general and detailed information. Parents of children aged 0–3 years were asked to complete the questionnaire at pre-schools and medical institutions.

Results: Among 4,500 distributed questionnaires, 3,214 (71%) were completed and processed. Parents reported that 25% of their young children had food hypersensitivity. According to the survey the most common agents involved in food hypersensitivity in young children were cow's milk (34%), egg (28%), and wheat (24%). Hypersensitivity to milk occurred in 50% of children in the age group of 1–2 years. Regional differences associated with food hypersensitivity were also found. Namely, in the Carpathians, there was more hypersensitivity to fish (27%) and honey (22%) than in other regions, while hypersensitivity to soy was detected mostly in Lviv City residents (8.5%). Unknown causes of food hypersensitivity were highly reported (34%) in the Carpathians.

Conclusion: Prevalence and some distinctiveness of food hypersensitivity revealed in four geographic and climate zones as well as in Lviv City have a considerable practical use for formulation of recommendations for children with food hypersensitivity.

It is observed a correlation between the administration of artificial ventilation in the neonatal period and the subsequent formation of bronchopulmonary pathology.
Aim: To study the frequency and the features of the course of broncho-pulmonary pathology in young children who were on artificial ventilation of the lungs in the neonatal period.
Materials and methods: The directions of the selection of medical histories were conducted, which was carried out by artificial ventilation of the lungs for pulmonary causes. The article presents the literature data and own experience of authors, which proves that there is a correlation between the conducted artificial ventilation of the lungs in the neonatal period and the subsequent formation of bronchopulmonary pathology.
Results: The results of a retrospective analysis of 475 children who received respiratory therapy are shown. It is a positive correlation is observed between the duration of artificial ventilation and the incidence of bronchitis (p <0.005) and pneumonia (p <0.005). There is a close correlation between the early introduction of artificial feeding and the development of allergies. We found a positive correlation between the presence of allergic pathology and hereditary predisposition to the development of atopy, gestational age and the development of bronchopulmonary dysplasia.
Conclusions: In 27% of children who stayed on artificial ventilation during the neonatal period, there was a recurrent broncho-obstructive syndrome in early childhood. Premature children who have undergone acute pulmonary disorder and hereditary hereditary burdens should be considered as a highrisk group for developing bronchial asthma. Repeated episodes of broncho-obstructive syndrome in young children, who during the neonatal period were on artificial ventilation of the lungs, were most often due to bronchial asthma, which was characterized by a severe course