By Steve Gorman

(Reuters) – Days after completing his historic ride into space as part of the first all-civilian crew to reach Earth orbit, billionaire e-commerce mogul and mission commander Jared Isaacman is back at home, and unexpectedly back in quarantine.

Isaacman (38), said that he returned to Earth on Thursday with “a house full” of COVID, just five days after his Inspiration4 teammates had safely sailed down the Atlantic.

Isaacman stated that his wife and their daughters (aged 5 and 7 years), and their in-laws were all afflicted by COVID-19 after they returned from Florida. The family was apparently infected during the time between the flight and the return.

Isaacman claimed that so far he has not tested positive.

Florida had one of the highest COVID-19 rates due to the recent spike in infection caused by the Delta virus.

Isaacman is unprepared for the new in-home lockdown.

    My wife, my children, and I were in quarantine prior to the launch. While in orbit, there are no quarantine breaks. The launch and reentry events are stressful and you can see that there was a bit of COVID through our household.

Isaacman claimed that none of his relatives have been seriously ill. However, they may be experiencing symptoms.

Isaacman said that his entire family was fully vaccinated for their trip to Cape Canaveral. That’s where the SpaceX rocketship they flew in from the Kennedy Space Center took off. Before returning home, the family spent some time in Orlando.

Isaacman is the founder of Shift4 Payments and its chief executive. He recalled the highlight of his three-day spaceflight expedition as seeing the moonrise above Earth.

He said, “It just made me think…we have to continue turning science fiction into reality.” We have to return to the space station, back to Mars and the moon. There is so much space and yet we don’t know anything about it.

Isaacman, who is an experienced jet pilot and has logged thousands of hours flying, created the mission to increase awareness and funds for St. Jude Children’s Research Center in Tennessee.

Isaacman paid SpaceX to take four Crew Dragon seats. He declined to reveal the amount but claimed it was much less than $200 million as reported by Time magazine. Additionally, he donated $100 million of his personal money to St. Jude.

Elon Musk, SpaceX’s founder, pledged $50 million to the charity campaign just after splashdown. This was his most personal moment.

Isaacman claimed that the charity drive would raise $250m for the hospital. Hayley, a 29-year old bone cancer survivor and childhood patient, said that it was in line to reach this goal. Hayley is now a physician assistant.

Sian Proctor (51) and Chris Sembroski (42) were part of the group.