There are several points of difference between the fictional virus and the COVID-19 outbreak.
All evidence points to the coronavirus starting in Wuhan Seafood Market as a result of human to animal interactions. Yet, in 'Eyes of Darkness' the virus is being developed in a secret laboratory as a biological weapon. In the novel it is man made, not a natural occurrence.
The fictional virus does not affect animals - yet, scientific consensus is that the real virus started in them.
Coronavirus has a relatively low mortality rate of 0.2%, compared to 100% in the novel.
In the book, the virus has a four hour incubation period. The actual virus' incubation period can be up to two weeks.