A boy is 1 month old. At the medial edge of the inferior eyelid on the right there is a wound with purulent discharge. The boy fell ill suddenly, body temperature rose up to 40°C. The general condition is grave. On the second day of disease there appeared an infiltration at the internal edge of eye socket and right cheek. The skin above it is hyperemic, fluctuation cannot be determined. Palpebral fissure is narrowed. The right nasal meatus discharges pus. There is an infiltration on the vestibular surface of alveolar process and on the right palate. Mucous membrane above it is hyperemic along the mucogingival fold, fluctuation can be determined. What is the most likely diagnosis?