The patient was the 4-year-old male, son of the abovementioned 23-year-old patient. The child had never been vaccinated against TB due to the lack of TB risk within the family. He resides in the same household as his mother and grandparents. The family reported no health problems for the child. A posterior-anterior chest X-ray showed no pathology in the lung parenchyma. TST results showed an induration of +16 mm and Interferon gamma release assay (IGRA test) was positive. As a very close family contact, the boy was started on isoniazid chemoprophylaxis at a dose of 5 mg/kg of body weight, which was continued for 6 months as treatment for an identified latent tuberculosis infection.