immunity | OSF HealthCare Blog

Two people with masks sit far apart from each other on a bench to help prevent the spread of COVID.

Can vaccinated people spread COVID-19?

November 1, 2021

Get to know the immune system – your body’s defense against illness

July 3, 2021

COVID-19 vaccine and lingering symptoms

June 23, 2021

Why you need the second COVID-19 vaccine dose

May 29, 2021

Female with hypertension getting blood pressure checked by health care provider.

COVID-19 and hypertension: What’s the concern?

August 17, 2020