This obituary is part of a series about people who have died in the coronavirus pandemic.

Israel Sauz of Tulsa, Okla., couldn’t wait to see his first child, a baby boy named Josiah. And he couldn’t wait for the world to see him, too. So he got in close and took a picture for Facebook of his son, fast asleep in a green onesie, shortly after the boy came into the world one Sunday last month.

Just 21 days later, on April 5, Mr. Sauz was dead. He was 22.

The cause was complications related to Covid-19, the disease caused by the coronavirus, according to family friends and the school district where he attended high school.

Many in Tulsa may not have recognized his name, but they knew the smiling face — he was an assistant night manager at a busy QuikTrip gas station and convenience store about a mile east of downtown Tulsa. He was still a teenager when he first started working for QuikTrip, a popular chain based in Tulsa.