The first wave of the 1918-19 influenza pandemic did not have much impact in India; it was the second wave that was the most devastating.
It is now thought that 12 million people died in India during the flu pandemic, the equivalent of 4 percent of the population at that time. Most of these deaths were concentrated in a few short months from September to December 1918. This quote is from Punjab’s sanitary commissioner at the time:
The hospitals were choked so it was impossible to remove the dead quickly enough to make room for the dying….; the burning ghats (cremation site) were literally swamped with corpses; the depleted medical service, was incapable of dealing with more than a minute fraction of the sickness requiring attention.