%0 Journal Article
	%A Gleda Kutrolli and  Maksi Kutrolli and  Etjon Meco
	%D 2021
	%J International Journal of Medical and Health Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 169, 2021
	%T The Origin, Diffusion and a Comparison of Ordinary Differential Equations Numerical Solutions Used by SIR Model in Order to Predict SARS-CoV-2 in Nordic Countries
	%U https://publications.waset.org/pdf/10011742
	%V 169
	%X SARS-CoV-2 virus is currently one of the most
infectious pathogens for humans. It started in China at the end of
2019 and now it is spread in all over the world. The origin and
diffusion of the SARS-CoV-2 epidemic, is analysed based on the
discussion of viral phylogeny theory. With the aim of understanding
the spread of infection in the affected countries, it is crucial to
modelize the spread of the virus and simulate its activity. In this
paper, the prediction of coronavirus outbreak is done by using SIR
model without vital dynamics, applying different numerical technique
solving ordinary differential equations (ODEs). We find out that ABM
and MRT methods perform better than other techniques and that the
activity of the virus will decrease in April but it never cease (for
some time the activity will remain low) and the next cycle will start
in the middle July 2020 for Norway and Denmark, and October 2020
for Sweden, and September for Finland.
	%P 33 - 62