ABC News' chief Washington correspondent Jonathan Karl is among those infected and this is significant for two reasons.
Firstly, the newsman shook hands with President Joe Biden at the event according to CNN.
Notably, the dinner took place in Washington, DC on April 30, 2022.

Jon is currently isolating and participating in contract tracing."
This reportedly included same-day testing, with Karl taking the additional step of being tested at the event itself.
