Хм... нда... Дело темное. Прекрасно понимаю persons exposed to the risk of isoniazid toxicity, но хотелось бы правды. Я сегодня прочитал около 200 абстрактов по поводу этого booster phenomenon. Нашел такое.
Am Rev Respir Dis. 1979 Apr;119(4):587-97.
The booster phenomenon in serial tuberculin testing.
Thompson NJ, Glassroth JL, Snider DE Jr, Farer LS.
To determine the frequency, magnitude, and causes of the booster phenomenon in tuberculin testing, a total of 1,478 employees from 10 hospitals throughout the United States received sequential intradermal tests using PPD-T. In addition, approximately 70 per cent were initially tested with PPD-G. Boosting was found in all age groups tested, but increased with age. It occurred as soon as one week after an initial tuberculin test, but rarely before that time. The boosted reactions were apparently caused either by remote tuberculous infection or recent or remote sensitization by one or more of the nontuberculous mycobacteria. In areas endemic for nontuberculous mycobacteria, they are the most likely cause of the sensitivity that may be boosted. On the basis of these findings, it is recommended that when repeated tuberculin testing is required as part of a hospital control program, a second identical tuberculin test be given one week after the first. When subsequent tests are given, this should permit separation of boosted reactions from reactions caused by new infections. Persons who do not boost when giben repeat tests at one week, but whose tuberuclin reactions change to positive after one year, should be considered to have newly acquired tuberculous infection and managed accordingly.
PMID: 109023 [PubMed - indexed for MEDLINE]
Замечу, что все вопросы крутятся вокруг результатов меньше 10 мм на 5 ТЕ и как бы бОльшие папулы считаются необсуждаемыми. Да, ну и как поступать с теми у кого вираж или конверсия? Ведь каждый родитель хочет сказать что это "неправда"...
