The 5-year-old child has been ill for 2 weeks. Cough attacks developed first and were then followed by reprises. During coughing the child’s face turns red and cervical veins bulge. The cough attacks induce vomiting, X-ray shows intensified bronchial pattern. Blood test: leukocytes – 16 x 109/L . lymphocytes 72%, erythrocyte sedimentation rate – 4 mm/hour. What is the most likely diagnosis?