Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 209, Issue 3, Pages 426-430Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/infdis/jit496
Keywords
syphilis; gonorrhea; oscillation; wavelet; Fourier transform; immunity; disease dynamics
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Funding
- National Institutes of Health (Fogarty award) [1K01TW008200-01A1]
- Guangdong Provincial STI Control Center
- Burroughs Wellcome Fund/American Society of Tropical Medicine and Hygiene Wellcome Junior Faculty Award in Tropical Infectious Diseases
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The high burden of syphilis in China presents a unique opportunity to examine temporal trends. This study used wavelet transformation and Fourier analysis to assess the presence of temporal oscillations in the incidence of syphilis among adults, gonorrhea, and congenital syphilis over 11 years in China's largest province. This study found a significant annual oscillation trend in the incidence of adult syphilis, consistent with a peak during July-September, which was 4-fold higher than the trough, which occurred during January-March. A similar but dampened trend was observed in the incidence of gonorrhea, and no trend was observed for the incidence of congenital syphilis. Further research on the temporal oscillation of the incidence of syphilis is needed.
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