We prove the nonintegrability of susceptible-exposed-infected-removed (SEIR) epidemic model in Bogoyavlenskij sense. This property SEIR is different from more fundamental susceptible-infected-removed (SIR) model, which Bogoyavlenskij-integrable. Our basic tool for proof an extension Morales-Ramis theory due to Ayoul and Zung. Moreover, we introduce three new state variables extend system a six-...

Covid-19 is a very extraordinary case not only in one country but all countries the world. The number of deaths caused by large and rate spread this disease high fast. In paper, we perform an analysis covid-19 epidemic model. This model development SEIR general which equipped with Quarantine (Q), Fatality (F) compartment, there separation between detected undetected infected people (I). Our sho...

The variable generalised stochastic epidemic (VGSE) model which allows for variability in both the susceptibility and infectivity of individuals is analysed. A very different epidemic model which exhibits variable susceptibility and infectivity is the random graph epidemic model. A suitable coupling of the two epidemic models is derived, which enables us to show that, whilst the epidemics are v...

Dengue Hemorrhagic Fever (DHF) is a tropical disease that always attacks densely populated urban communities. Some factors, such as environment, climate and mobility, have contributed to the spread of disease. The Aedes aegypti mosquito an agent dengue virus in humans, by inhibiting its life cycle it can reduce Therefore, necessary involve dynamics mosquito's model order obtain reliable risk ma...