The astronaut whose illness forced an early return from the ISS was Mike Fincke
NASA ended the Crew-11 ISS mission one month early after astronaut Mike Fincke experienced a medical emergency on January 7, marking the first medical evacuation in ISS history.
NASA names astronaut who suffered life-threatening emergency on ISS
NASA astronaut Mike Fincke experienced a medical emergency requiring early evacuation of Crew-11 from the International Space Station, with the crew safely returning to Earth on January 15.