Accepted for/Published in: JMIR Public Health and Surveillance
Date Submitted: Sep 20, 2022
Date Accepted: Mar 29, 2023
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Spatiotemporal and Seasonal Trends of Class A and B Notifiable Infectious Diseases in China: A retrospective Analysis
ABSTRACT
Background:
China is the most populous country globally and has made significant achievements in the control of infectious diseases over the last decades. The 2003 SARS epidemic triggered the initiation of the China Information System for Disease Control and Prevention. Since then, numerous studies have investigated the epidemiological features and trends of individual infectious diseases in China; few considered the changing spatio-temporal trends and seasonality of these infectious diseases over time.
Objective:
We systematically reviewed the spatio-temporal trends and seasonal characteristics of class A and class B notifiable infectious diseases in China during 2005-2020.
Methods:
We systematically reviewed the spatio-temporal trends and seasonal characteristics of class A and class B notifiable infectious dWe extracted the incidence and mortality data of eight types (27 diseases) of notifiable infectious diseases from the China Information System for Disease Control and Prevention. We used Mann-Kendall's and Sen's methods to investigate the diseases’ temporal trend, Moran's I statistic for its geographical distribution, and circular distribution analysis for their seasonality.iseases in China during 2005-2020.
Results:
Between January 2005 and December 2020, 51,028,733 incident cases and 261,851 attributable deaths were recorded. Pertussis, dengue fever, brucellosis, scarlet fever, acquired immunodeficiency syndrome (AIDS), syphilis, and hepatitis C and E exhibited significant upward trends. Furthermore, measles, bacillary and amoebic dysentery (BAD), malaria, dengue fever, brucellosis, and tuberculosis exhibited significant seasonal patterns. We observed marked disease burden-related geographic disparities and heterogeneities. High-risk areas for various infectious diseases have remained relatively unchanged since 2005. In particular, hemorrhagic fever and brucellosis were largely concentrated in Northeast China; neonatal tetanus, typhoid and paratyphoid, Japanese encephalitis, leptospirosis, AIDS in Southwest China; BAD in North China; schistosomiasis in Central China; anthrax, tuberculosis, hepatitis A in Northwest China; rabies in South China and gonorrhea in East China. Notably, the geographical distribution of syphilis, scarlet fever, and hepatitis E drifted significantly from coastal to inland provinces during 2005-2020.
Conclusions:
The overall infectious-disease burden in China is declining; however, hepatitis C and E, bacterial infections, and sexually transmitted infections continue to multiply, many of which have spread from coastal to inland provinces.
Citation
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