Quantitative Impact of Human Immunodeficiency Virus Infection on Tuberculosis Dynamics
Overview
Affiliations
Rationale: Human immunodeficiency virus (HIV) infection has a major but unquantified impact on the risk of tuberculosis.
Objectives: To quantify the impact of HIV infection on the number of tuberculosis cases in San Francisco.
Methods: We studied all patients reported with tuberculosis in San Francisco from 1991 to 2002. The initial isolates of Mycobacterium tuberculosis were genotyped using IS6110 restriction fragment-length polymorphism genotyping as the primary method, and clustered cases (identical genotype patterns) were identified.
Measurements And Main Results: We determined the case number, case rate, and the fraction of tuberculosis attributable to HIV infection. Of 2,991 reported tuberculosis cases, 2,193 (73.3%) had a genotype pattern of M. tuberculosis available. Genotypic clusters with at least one HIV-positive person were larger, lasted longer, and had a shorter time between successive cases relative to clusters with only HIV-uninfected persons (P < 0.00005, P = 0.0009, P = 0.018, respectively). Overall, 13.7% of the tuberculosis cases were attributable to HIV infection and an estimated 405 excess tuberculosis cases occurred.
Conclusions: During a period encompassing the resurgence and decline of tuberculosis in San Francisco, a substantial number of the tuberculosis cases were attributable to HIV infection. Coinfection with HIV amplified the local tuberculosis epidemic.
Tian X, Wang C, Hao Z, Chen J, Wu N Front Reprod Health. 2024; 6:1475498.
PMID: 39720120 PMC: 11666487. DOI: 10.3389/frph.2024.1475498.
Windels E, Wampande E, Joloba M, Boom W, Goig G, Cox H PLoS Pathog. 2024; 20(5):e1011675.
PMID: 38696531 PMC: 11093396. DOI: 10.1371/journal.ppat.1011675.
Htet K, Chongsuvivatwong V, Aung S Trop Med Health. 2021; 49(1):3.
PMID: 33407932 PMC: 7789670. DOI: 10.1186/s41182-020-00292-x.
Chepkondol G, Jolly P, Yatich N, Mbowe O, Jaoko W Afr Health Sci. 2020; 20(2):615-624.
PMID: 33163022 PMC: 7609085. DOI: 10.4314/ahs.v20i2.9.
Tyagi P, Pal V, Agrawal R, Singh S, Srinivasan S, Singh A mBio. 2020; 11(2).
PMID: 32127457 PMC: 7064780. DOI: 10.1128/mBio.03293-19.