When the condition was urgent, Jacobs was taken on Saturday to a local smaller hospital just 200 meters from the training facility at the stadium to save time. 

We would like to thank the staff and doctors, Gianfranco Morino and Washington Njogu, who have been very attentive, friendly and professional with Marcell and with all of us.

We also thank the staff at the Italian Embassy, ​​in particular the security official, who have given us help throughout the event ", writes the Italian Athletics Federation.

Jacobs, who took a sensational gold in Tokyo and followed it up by winning the 60-meter indoor world championships in March, was received as a hero ahead of his outdoor season debut on arrival at Jomo Kenyatta Airport on Thursday.

It would be the first race in the 100 meters since the Olympic final on August 1.

Kenya's president in the stands

But after suspicions of a stomach poisoning, Jacobs was taken to Uhai Neema Hospital's emergency room for treatment just hours before the start.

From the hospital, he saw home runner Ferdinand Omanyala win the race at the world year's best 9.85.

Omanyala was then congratulated by the country's athletic president Uhuru Kenyatta on the VIP stand where the old champion runner Kip Keino, who gave the competition its name, was also located.

“Congratulations on your race.

I wish I had been there to compete with you.

Thank you for coming and visiting me.

Thanks also to your family and all the wonderful people there.

See you soon ", Jacobs writes on Instagram.

Jacobs also led Italy to Olympic gold in the 4x100-meter relay.