Epidemiology of drug-resistant tuberculosis in Chongqing, China: A retrospective observational study from 2010 to 2017

AbstractChina is one of the top 30 countries with high multidrug-resistant tuberculosis (MDR-TB) and rifampin-resistant tuberculosis (RR-TB) burden. Chongqing is a southwest city of China with a large rural population. A retrospective observational study has been performed based on routine tuberculosis (TB) surveillance data in Chongqing from 2010 to 2017. The MDR/RR-TB notification rate increased from 0.03 cases per 100,000 population in 2010 to 2.09 cases per 100,000 population in 2017. The extensively drug-resistant TB (XDR-TB) notification rate has increased to 0.09 cases per 100,000 population in 2017. There was a decreasing detection gap between the number of notified MDR/RR-TB cases and the estimate number of MDR/RR-TB cases among all notified TB cases. The treatment success rate of MDR/RR-TB was 50.66% in this period. The rate of MDR/RR-TB in new TB cases was 6.23%, and this rate in previously treated TB cases was 32.7%. Despite the progress achieved, the prevalence of MDR/RR-TB was still high facing challenges including detection gaps, the regional disparity, and the high risk for MDR/RR-TB in elderly people and farmers. Sustained government financing and policy support should be guaranteed in the future.

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Cycloserine for Treatment of Multidrug-Resistant Tuberculosis in China: A Retrospective Observational Study

10.1101/307124 ◽

2018 ◽

Author(s):

Yang Li ◽

Fei Wang ◽

Limin Wu ◽

Min Zhu ◽

Guiqing He ◽

...

Keyword(s):

Treatment Outcome ◽

Observational Study ◽

Multidrug Resistant ◽

Drug Resistant ◽

Drug Resistant Tuberculosis ◽

Resistant Tuberculosis ◽

Multidrug Resistant Tuberculosis ◽

Extensively Drug Resistant ◽

Mdr Tb ◽

Culture Conversion

AbstractObjectivesCycloserine is crucial in multidrug-resistant tuberculosis (MDR-TB) treatment. Although extensive research has been carried out on MDR-TB, most researchers have not treated cycloserine in much detail. Therefore, we evaluate the efficacy and safety of cycloserine and seek to clarify the role of cycloserine for treatment of simple MDR-TB, pre-extensively drug-resistant tuberculosis (pre-XDR-TB), and extensively drug-resistant tuberculosis (XDR-TB).Patients and methodsA retrospective observational study was performed in China. We determined the treatment outcome as the primary outcome for 144 cycloserine-treated and 181 cycloserine-nontreated patients according to the definitions of WHO. The proportion of patients with sputum-culture conversion and the frequency of adverse drug reactions related to cycloserine were assessed as well.ResultsAmong 325 MDR-TB patients, 144 were treated with cycloserine and 100 (69.4%) out of 144 successfully completed treatment. Compared with patients in non-cycloserine group, the hazard ratio of any unfavorable treatment outcome was 0.53 (95%CI: 0.35-0.81, P=0.003). Culture conversion rate at the intensive phase was similar whether cycloserine was administered or not (P=0.703). Of the 144 patients treated with cycloserine, a total of 16 (11.1%) patients experienced side-effects related to cycloserine, including 7 patients who discontinued cycloserine permanently.ConclusionsCycloserine could be an attractive agent to treat MDR-TB. Its safety profile warrants use in the most of MDR-TB cases. Cycloserine significantly improved the chance of favorable outcome for patients with simple MDR-TB but not pre-XDR-TB and XDR-TB. More aggressive regimens might be required for pre-XDR-TB or XDR-TB patients.

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An observational study of adverse drug reactions in hospitalized patients of drug resistance tuberculosis taking PMDT therapy in a tertiary care hospital

International Journal of Basic & Clinical Pharmacology ◽

10.18203/2319-2003.ijbcp20213363 ◽

2021 ◽

Vol 10 (9) ◽

pp. 1101

Author(s):

Payal P. Naik ◽

Arvind S. Pandey ◽

Swati S. Patel

Keyword(s):

Observational Study ◽

Adverse Drug Reactions ◽

Tertiary Care Hospital ◽

Tertiary Care ◽

World Health ◽

Care Hospital ◽

Drug Resistant ◽

Drug Reactions ◽

Drug Resistant Tuberculosis ◽

Resistant Tuberculosis

Background: Drug resistant tuberculosis is an important public health issue in India. The treatment regimen followed is Programmatic Management of Drug resistant Tuberculosis (PMDT) approach. Adverse drug reactions (ADRs) are a serious issue which increases the risk of defaulter rate if poorly managed. Thus study was undertaken to assess the ADRs caused by PMDT therapy in indoor patients of Department of Respiratory Medicine in a tertiary care hospital at Surat.Methods: The prospective and observational study was carried out for one year period. The causality was determined by World Health Organization (WHO) Uppasala Monitoring Centre (UMC) scale and severity was determined by Modified Hartwig and Siegel scale. Fisher exact test was applied for statistical analysis.Results: Among 24 drug resistant tuberculosis patients, 12 (50%) patients developed ADRs due to second line antitubercular drugs. Occurrence of ADRs was more among Category V (100%) as compared to Category IV (36.8%). Occurrence of ADRs was more among females (60%). The commonly involved systems are auditory system (33.3%). Majority of ADRs developed within 61-90 days (66.7%) of initiation of drug therapy. Highest percentage of ADRs causing drugs was pyrazinamide (27.8%). On evaluation of the causality of ADRs, majority were found to be possible (53.3%). The severity assessment showed that most of the patients ADRs were of moderate level (73.3%).Conclusions: PMDT therapy is complicated but early management and reporting of ADRs decreases default rate.

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