Good news about the 'Moderna arm' vaccine rash — it's no worse with second shot

There's good news about "Moderna arm," the raised, sometimes itchy red rash some people get a week or so after being vaccinated with Moderna's COVID-19 vaccine.

There were concerns people who experienced the annoying rash might have a worse reaction with the second dose. A report published Wednesday finds that's not the case – and most don't have any reaction at all the second time.