A West Nile Virus Model with Vertical Transmission and Periodic Incubation Periods

TIME: 3:30 PM

LOCATION: GMCS 314

SPEAKER: Feng-Bin Wang, Natural Science, Chang Gung University

ABSTRACT:

West Nile virus (WNv) is a mosquito-borne disease caused by Flavivirus. To investigate the combined effects of vertical transmission, temperature-dependent incubation periods and environmental heterogeneity on the transmission of WNv, we develop a delay differential system with stage-structure and time-varying delays. We then derive the mosquito reproduction number and WNv reproduction number, respectively, and further show that these two numbers serve as threshold parameters that determine whether WNv will spread or not. Numerical simulations support our analytic results and suggest that time-periodic delays and environmental heterogeneity can play important roles in the WNv dynamics.

Bio: Dr. Feng-Bin Wang is a Professor in the Division of Natural Science, Center for General Education, Chang Gung University, Taiwan; and a Center Scientist in National Center for Theoretical Sciences of Taiwan; and a Research Fellow in the Community Medicine Research Center, Chang Gung Memorial Hospital, Taiwan. He also obtained experiences in postdoctoral research at the Department of Mathematics, National Tsing Hua University, Taiwan and Western University, Canada. Dr. Wang received Ph.D. and M.Sc. in Department of Mathematics, National Tsing Hua University, Taiwan, and B.Sc. in Department of Mathematics, National Kaohsiung Normal University, Taiwan. Dr. Wang’s research interests include competition theory arising from ecology, ecological modeling, epidemiology, differential equations, and dynamical systems. His research experience has resulted in more than 60 peer-reviewed papers and more than 10 programs supported by MOST/NSTC of Taiwan. Besides, he obtained the following honors: NCTS Young Theoretical Scientist Award (March, 2016), sponsored by MOST; Research Award of Chang Gung University (Sep., 2016 and 2020); Research Grant for Excellent Young Scientists of MOST, Taiwan (2016-2019); Teaching Award of Chang Gung University (Sep., 2017 and 2021); and NCTS Scientific Members (since January, 2017), sponsored by MOST of Taiwan.

HOST: Naveen K. Vaidya

VIDEO: