_P\right)} $$\end{document}R0=bpnPmp1−δPωP1−δpωP+δPωP'+mPγP+mP+κbPnPmPδPωP'1−δPωP+δPωP'+mPγP'+mP+bWnPmP1−δpωp1−δpωP+δPωP'+mpγP+mP+bWnPmPcδPωP'1−δpωP+δPωP'+mpγP'+m