89,965 Adults responded to an SMS about their health a
few days after their influenza vaccinations.

93.9%
reported no adverse events

93.9%
reported no adverse events


6.1%
reported any adverse
event, including...


0.3%
who reported going
to a doctor or emergency
department in the days after
vaccination.

The adverse events they reported were similar to the types of adverse events reported overall

 

5,444 adults reported one or more adverse events.
The most commonly reported were:



These symptoms are known to occur after vaccination. They are generally mild and short-lived.