Commonwealth 100m champion Kemar Bailey-Cole has claimed that he is suffering from the Zika virus.
Fears over Zika, which is linked to serious birth defects, have led to several golfers, including Rory McIlroy, withdrawing from Rio 2016.
The 24-year-old Jamaican is quoted by BBC Sport as saying: "I didn't know I had the virus and I have been training with it for three days now.
"I was experiencing back pains and muscle soreness, but I thought it was just soreness from the exercises I was doing.
"Recovering is not easy. The rashes are still on my body, my eyes hurt, but the best thing is that I am not feeling any muscle pain at the moment."
Bailey-Cole is currently preparing for next week's Jamaican Olympic trials, where he will face the likes of Usain Bolt, Asafa Powell and Yohan Blake for a place at the Rio Games.
