The virus can and does stay alive for up to nine days on smooth surfaces. Most surfaces it can and does survive for three days. A very few surfaces it survives for only 36 hours. So when you insert your credit card, it gets covered in virus. The key pad has virus, the nozzle has virus, the hose has virus, the button you push to select grade of fuel has virus on it. Did you wear latex gloves, and keep all your clothing from contact with hose or nozzle.......??? Did you wear disposable covers on your shoes, so as not to track the virus on the ground into your vehicle, then into you.
You might want to have a conversation with the staff at the hospital where you are employed about coronavirus-19 on surfaces.