title: Resistance to antituberculosis drugs in Riyadh, Saudi Arabia.
abstract: The prevalence of resistance to antituberculosis drugs in Riyadh was found to be 21.3%, while the rate of primary drug resistance was 11.5%. Resistance to isoniazid was the most common (19.4%) followed by rifampicin and streptomycin. The prevalence of primary and acquired rifampicin resistance was 3 and 33.7% respectively. The majority of isolates from patients with acquired resistance to rifampicin were resistant also to isoniazid.
authors.affiliation: Department of Medicine, King Khalid University Hospital, Riyadh, Saudi Arabia.
authors.forename: I O
authors.initials: IO
authors.lastname: al-Orainey
authors.forename: E S
authors.initials: ES
authors.lastname: Saeed
authors.forename: F A
authors.initials: FA
authors.lastname: el-Kassimi
authors.forename: N
authors.initials: N
authors.lastname: al-Shareef
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000995:Antitubercular Agents / Q000494:pharmacology*; D002648:Child; D002675:Child, Preschool; D004352:Drug Resistance, Microbial; D005260:Female; D006801:Humans; D007223:Infant; D007538:Isoniazid / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D012293:Rifampin / Q000494:pharmacology; D012529:Saudi Arabia; D013307:Streptomycin / Q000494:pharmacology
chemical_list: D000995:Antitubercular Agents; D007538:Isoniazid; D012293:Rifampin; D013307:Streptomycin