I would give a 4.5/5.
Let me start by writing AA, you have done an exceptional work. The execution as a director is a 10/10.
The story which is more about the situation which people had undergone through the epidemic is very well illustrated. All actors need special appreciation esp. the cast by revathy...Wow!! I think she needed a special mention. Joju is always my favorite (His best is yet to come). One thing which need a highlight is that the movie conveys a big message to all, how to act during an epidemic and it brings out how difficult it was to tackle and contain such epidemic. Personally I feel the government machinery proved it was really in control of the situation. The lives lost during this is definitely an irrecoverable loss, but I see it that the disease is so contagious that it was something lethal and life threatening, that anyone who comes in contact get infected. The portrayal of the pathetic situation of our HC system of the state is well portrayed, the causality dept, the struggling house surgeon Dr's (who are exposed to all risks every time), the pathetic waste disposal units and the shabby wards gives a strong message to the government machinery to improve the basic HC support systems.
Did AA left thinking influenced his script and plot a bit? May be yes...but I truly would like to view it as Director's choice. A big salute to the cast and Crew for the Plot, the research done to make this movie and completely trying mirror each instances in the most part of the film. Soubin you are a star!!