The Health Ministry in Brazil says 230 people have been killed by swine flu this year – more than six times the number for the whole of 2015.
More than 70 deaths were registered in the last week alone.
A national campaign of free swine flu vaccinations begins on Saturday with long queues formed outside private clinics that are offering the swine flu jabs.
The state of Sao Paulo has been the worst affected by the h1n1 virus. Deaths there make up half the national total.
The h1n1 virus first appeared in Mexico in 2009 and rapidly spread around the world killing more than 200,000 people