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被认为是最有效的抗结核药利福平的出现使得肺结核的化疗疗程得以缩短至六个月,然而由于它昂贵的价格大大地提高了治疗成本。英国1978年统计,六个月的给药方案(2个月链霉素、利福平、吡嗪酰胺和异烟肼,后四个月利福平和异烟肼)要花费360美元,其中90%的费用为利福平占用。比起所谓100%有效的18个月给药方案(2个月链霉素,氨硫脲和异烟肼,其后用氨硫脲和异烟肼)要花费18美元的开支高出许多倍。按巴西的6个月给药方案(2个月异烟
The emergence of rifampicin, considered to be the most effective anti-tuberculosis drug, has allowed the treatment of tuberculosis chemotherapy to be shortened to six months, however, due to its high price, the cost of treatment has greatly increased. In the United Kingdom in 1978, the six-month dosing regimen (two months of streptomycin, rifampin, pyrazinamide, and isoniazid, followed by four months of rifampicin and isoniazid) cost US$ 360, of which 90 The cost of % is Rifampin occupancy. Compared to the so-called 100% effective 18-month dosing regimen (2 months of streptomycin, thiosemicarbazone, and isoniazid, followed by thiosemicarbazone and isoniazid) costs of 18 dollars are many times higher . Six-month dosing regimen according to Brazil (2 months isoniazid