Journal of Tropical Diseases and Parasitology ›› 2024, Vol. 22 ›› Issue (2): 76-82.doi: 10.3969/j.issn.1672-2302.2024.02.003

• TOPICS ON VECTOR-BORNE DISEASES • Previous Articles     Next Articles

Incidence trends and age-period-cohort analysis of leishmaniasis in China from 1990 to 2019

BAI Jinshu1(), QIN Liyan1, SHI Guangzhong2, WANG Feng1, WANG Fushuang1, LI Rui3(), ZHAO Jiangshan2()   

  1. 1. School of Public Health, Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
    2. Center for Disease Control and Prevention of Xinjiang Uygur Autonomous Region
    3. Basic Medical College, Xinjiang Medical University
  • Received:2023-10-15 Online:2024-04-20 Published:2024-04-30
  • Contact: LI Rui, E-mail: 1270824269@qq.com; ZHAO Jiangshan, Email: zjscdc@163.com

Abstract:

Objective To analyze the change trend of leishmaniasis incidence in China from 1990 to 2019, and investigate the influence of age, period and cohort factors on the incidence of leishmaniasis for reference to develop the prevention and control policy for this prevalence in China. Methods By the 2019 Global Burden of Disease Database as information source, the data on the incidence, crude incidence and standardized incidence of leishmaniasis in China from 1990 to 2019 were extracted. The Joinpoint regression model was used to analyze the change trend of leishmaniasis standardized incidence in China from 1990 to 2019, and the annual percentage change (APC) and average annual percentage change (AAPC) were calculated. An age-period-cohort model was used to analyze the effects of age, period and cohort factors on the incidence of leishmaniasis in China. Results From 1990 to 2019, the incidence of leishmaniasis in China was decreased from 4 487 to 904 cases, with a decrease of 79.85%. The crude incidence and the standard incidence were declined from 0.38/100 000 to 0.06/100 000 and from 0.37/100 000 to 0.08/100 000, with a drop of 84.21% and 78.38%, respectively. The Joinpoint regression model showed that the standardized incidence of leishmaniasis in the whole population, men and women in China from 1990 to 2019 represented a decreasing trend, and AAPC was -5.00%, -5.06% and -4.95%, respectively, with statistically significant differences (t=-90.65, -90.70, -90.82, all P<0.01). The results of age-period-cohort model analysis suggested that the risk of leishmaniasis in the Chinese population from 1990 to 2019 was decreased with age (RR: 5.24 to 0.23) and period (RR: 2.14 to 0.67), and the risk of leishmaniasis was lessened with later birth cohort (RR: 7.86 to 0.12). Conclusion The low prevalence of leishmaniasis in China from 1990 to 2019 indicates that the prevention and control of leishmaniasis in China has achieved remarkable results, yet it is still necessary to strengthen the intervention of the vector and the protection of high-risk populations to reduce the burden of leishmaniasis in the key region in China.

Key words: Leishmaniasis, Incidence rate, Joinpoint regression, Age-period-cohort model, China

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