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106.
Which of the following clinical problems may indicate primary immunodeficiency?
1) six acute otitis media during a year in a child 4 years of age;
2) seven mild episodes of pharyngitis during a year in a 3-year-old child attending kindergarten;
3) purulent inflammation of the hip joint caused by Staphylococcus aureus in a 5-yearold child and extensive liver abscess of the same etiology at 9 years of age;
4) childhood tuberculosis in a mother, BCGitis in her son;
5) a 7-year-old unvaccinated against pneumococci boy underwent invasive pneumococcal disease; the boy had no problematic disease before and doesn’t have any other health problems;
6) occurrence of three episodes of pneumonia in a 12-year-old healthy girl including last episode complicated with lung abscess and pleural empyema; she had to be hospitalized for all episodes.
The correct answer is: