Are COVID-19 symptoms different if I’m infected with the Delta variant?

Is the Delta variant more likely to cause breakthrough infections in people who are fully vaccinated?

Bollinger:  We haven’t seen evidence of that just yet.

Breakthrough infections can occur for a couple of different reasons. If your antibody levels decline over time, you might be susceptible to breakthrough infections. The other type of breakthrough infection scenario is where the virus itself has mutated, so that the immune response you have doesn’t work as well. So those are two different potential scenarios, and both of those are being monitored.