{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T05:20:14Z","timestamp":1774329614127,"version":"3.50.1"},"reference-count":26,"publisher":"World Scientific Pub Co Pte Lt","issue":"08","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Bifurcation Chaos"],"published-print":{"date-parts":[[2013,8]]},"abstract":"<jats:p> This paper proposes a Filippov epidemic model with piecewise continuous function to represent the enhanced vaccination strategy being triggered once the proportion of the susceptible individuals exceeds a threshold level. The sliding bifurcation and global dynamics for the proposed system are investigated. It is shown that as the threshold value varies, the proposed system can exhibit variable sliding mode domains and local sliding bifurcations including boundary node (focus) bifurcation, double tangency bifurcation and other sliding mode bifurcations. Model solutions ultimately approach either one of two endemic states for two structures or the pseudo-equilibrium on the switching surface, depending on the threshold level. The findings indicate that proper combinations of threshold level and enhanced vaccination rate based on threshold policy can lead disease prevalence to a previously chosen level if eradication of disease is impossible. <\/jats:p>","DOI":"10.1142\/s0218127413501447","type":"journal-article","created":{"date-parts":[[2013,9,18]],"date-time":"2013-09-18T03:08:56Z","timestamp":1379473736000},"page":"1350144","source":"Crossref","is-referenced-by-count":34,"title":["SLIDING BIFURCATION AND GLOBAL DYNAMICS OF A FILIPPOV EPIDEMIC MODEL WITH VACCINATION"],"prefix":"10.1142","volume":"23","author":[{"given":"AILI","family":"WANG","sequence":"first","affiliation":[{"name":"Department of Applied Mathematics, Xi'an Jiaotong University, Xi'an 710049, P. R. China"},{"name":"Department of Mathematics, Baoji University of Arts and Sciences, Baoji 721013, P. R. 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