Though a good movie but a lot of things undefined.

Rating: 7/10 (14 December 2019)

Overall the movie is good but after watching it at i felt that a lot of things were not cleared about its plot.
One of the major thing not reveled was when everyone who looks at certain(unknown thing) they turns suicidal. But there are a group of people to who this does'nt affects and they forces others to get infected by virus. Who were these people ? Why did'nt they got affected by virus ? Why they were doing so ? This things are not told even when the movie ends.