[Tubercular immunity and streptomycin antibiosis; observations during miliary tuberculosis and tuberculous meningitis].
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This report described a 6-month-old boy who presented with miliary tuberculosis and severe CD8 deficiency, which is most likely secondary to miliary tuberculosis since his CD8 was back to normal 6 month after therapy and primary CD8 deficiency, (ZAP 70 defect) was ruled out. To our knowledge this is the first paediatric case reported with severe CD8 deficiency secondary to miliary TB.
BACKGROUND: BCG vaccine has shown consistently high efficacy against childhood tuberculous meningitis and miliary tuberculosis, but variable efficacy against adult pulmonary tuberculosis and other mycobacterial diseases. We assess and compare the costs and effects of BCG as an intervention against severe childhood tuberculosis in different regions of the world. METHODS: We calculated the number of tuberculous meningitis and miliary tuberculosis cases that have been and will be prevented in all children born in 2002, by combining estimates of the annual risk of tuberculosis infection, the proportion of infections that lead to either of these diseases in unvaccinated children, the number of children vaccinated, and BCG efficacy. FINDINGS: We estimated that the 100.5 million BCG vaccinations given to infants in 2002 will have prevented 29,729 cases of tuberculous meningitis (5th-95th centiles, 24,063-36,192) in children during their first 5 years of life, or one case for every 3435 vaccinations (2771-4177), and 11,486 cases of miliary tuberculosis (7304-16,280), or one case for every 9314 vaccinations (6172-13,729). The numbers of cases prevented would be highest in South East Asia (46%), sub-Saharan Africa (27%), the western Pacific region (15%), and where the risk of tuberculosis infection and vaccine coverage are also highest. At US2-3 dollars per dose, BCG vaccination costs US206 dollars (150-272) per year of healthy life gained. INTERPRETATION: BCG vaccination is a highly cost-effective intervention against severe childhood tuberculosis; it should be retained in high-incidence countries as a strategy to supplement the chemotherapy of active tuberculosis.
A 61-year-old woman was admitted with fever and headache of 10-day duration. She was found to have anemia, jaundice, and signs of meningitis. The erythrocyte sedimentation rate was increased and the tuberculin skin test was positive. A provisional diagnosis of miliary tuberculosis was made and antituberculous therapy was started, although no miliary lesions were seen on chest radiography. However, her condition rapidly deteriorated with diffuse opacification of both lungs and she died on the 7th hospital day. Postmortem examination revealed miliary tuberculosis in several organs but not in the lungs with acute respiratory distress syndrome accounting for the lung pathology. It should be noted that on rare occasions the lungs may not be involved by miliary tuberculosis.
A 29-year-old Caucasian woman presented to hospital with a 2-day history of diarrhoea, anorexia and rigors. Investigations showed abnormal liver function tests, hyponatremia, hypoalbuminaemia and lymphopenia. The initial chest radiograph was normal. A bone marrow trephine biopsy showed non-caseating granulomata and she subsequently developed miliary shadowing on the chest radiograph. A transjugular liver biopsy confirmed the presence of acid-alcohol fast bacilli. Despite starting triple therapy for miliary tuberculosis she remained febrile and developed massive hepatosplenomegaly, jaundice and pancytopenia. Standard triple therapy was substituted with ethambutol, streptomycin and oral prednisolone and the patient made a dramatic recovery. The clinical symptoms of miliary tuberculosis are frequently non-specific and the onset of the illness is often insidious. The liver is involved in almost all patients with miliary tuberculosis, but massive hepatosplenomegaly and jaundice are rare. Standard triple-therapy should be discontinued when there is significant liver dysfunction, and corticosteroids should be considered for patients with miliary tuberculosis who fail to respond to conventional therapy.
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