主讲人：邹兰  四川大学副教授

时间：2021年10月10日10：00

地点：腾讯会议 478 127 447

举办单位：数理学院

主讲人介绍：邹兰，四川大学数学学院副教授。2008年作为国家公派联合培养博士生在美国迈阿密大学数学系学习。2010年6月在四川大学获理学博士学位。2013年至2015年访问美国迈阿密大学数学系。目前研究方向为微分方程与动力系统、生物数学。先后主持国家自然科学基金青年基金、面上基金，参与国家自然科学基金重点基金一项。  

内容介绍：Studies have shown that sexual transmission, both heterosexually and  homosexually, is one of the main ways of HBV infection. Based on this fact, we  propose a mathematical model to study the sexual transmission of HBV among  adults by classifying adults into men and women and considering both same-sex  and opposite-sex transmissions of HBV in adults. Firstly, we calculate the basic  reproduction number R0 and the disease-free equilibrium point E0. Secondly, by  analysing the sensitivity of R0 in terms of model parameters, we find that the  infection rate among people who have same-sex partners, the frequency of  homosexual contact and the immunity rate of adults play important roles in the  transmission of HBV. Moreover, we use our model to fit the reported data in  China and forecast the trend of hepatitis B. Our results demonstrate that  popularizing the basic knowledge of HBV among residents, advocating healthy and  reasonable sexual life style, reducing the number of adult carriers, and  increasing the immunization rate of adults are effective measures to prevent and  control hepatitis B.