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However, this ignores the clinical spectrum of tuberculosis disease and potentially long infectious periods with minimal or no symptoms prior to care-seeking.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We developed novel statistical models to estimate progression from initial bacteriological positivity including smear conversion, symptom onset and initial care-seeking. Case-detection ratios, TB incidence, durations, and other parameters were estimated by fitting the model to tuberculosis prevalence survey and notification data (one subnational and 11 national datasets) within a Bayesian framework using Markov chain Monte Carlo methods.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Analysis across 11 national datasets found asymptomatic tuberculosis durations in the range 4\u20138\u2009months for African countries; three countries in Asia (Cambodia, Lao PDR, and Philippines) showed longer durations of &gt;\u20091\u2009year. For the six countries with relevant data, care-seeking typically began half-way between symptom onset and notification. For Kenya and Blantyre, Malawi, individual-level data were available. The sex-specific durations of asymptomatic bacteriologically-positive tuberculosis were 9.0\u2009months (95% credible interval [CrI]: 7.2\u201311.2) for men and 8.1\u2009months (95% CrI: 6.2\u201310.3) for women in Kenya, and 4.9\u2009months (95% CrI: 2.6\u20137.9) for men and 3.5\u2009months (95% CrI: 1.3\u20136.2) for women in Blantyre. Age-stratified analysis of data for Kenya showed no strong age-dependence in durations. For Blantyre, HIV-stratified analysis estimated an asymptomatic duration of 1.3\u2009months (95% CrI: 0.3\u20133.0) for HIV-positive people, shorter than the 8.5\u2009months (95% CrI: 5.0\u201312.7) for HIV-negative people. Additionally, case-detection ratios were higher for people living with HIV than HIV-negative people (93% vs 71%).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Asymptomatic TB disease typically lasts around 6\u2009months. We found no evidence of age-dependence, but much shorter durations among people living with HIV, and longer durations in some Asian settings. To eradicate TB transmission, greater gains may be achieved by proactively screening people without symptoms through active case finding interventions<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12916-021-02128-9","type":"journal-article","created":{"date-parts":[[2021,11,9]],"date-time":"2021-11-09T21:02:38Z","timestamp":1636491758000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["Durations of asymptomatic, symptomatic, and care-seeking phases of tuberculosis disease with a Bayesian analysis of prevalence survey and notification data"],"prefix":"10.1186","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4719-117X","authenticated-orcid":false,"given":"Chu-Chang","family":"Ku","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"MacPherson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"McEwen","family":"Khundi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rebecca H.","family":"Nzawa Soko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helena R. 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