# Comment on “Transmission Model of Hepatitis B Virus with the Migration Effect”

## TL;DR

This paper corrects errors in a hepatitis B virus transmission model and provides a more accurate stability criterion and reproduction number.

## Contribution

The paper identifies and corrects mathematical errors in eigenvalue calculations and presents an improved stability criterion.

## Key findings

- Erroneous eigenvalue calculations in recent mathematical biology literature are identified.
- An improved stability criterion for the hepatitis B virus transmission model is proposed.
- The correct basic reproduction number for the model is determined.

## Abstract

Some consequences of erroneous results concerning eigenvalues in the recent literature of mathematical biology are highlighted. Furthermore, an improved stability criterion and the true value of the basic reproduction number is presented.