In a series of posts on Instagram, she encouraged others to also get vaccinated against Covid-19.
“I just wanted to jump on here and say a massive thank you to everyone again for the messages of support. I am so grateful for every single one of you reaching out and looking after me. The ISL and Swimming Australia have been incredible to me,” said 27-year-old Wilson.
“Mostly I just wanted to jump on and continue to encourage people to get vaccinated. I did end up in hospital, but that is as a precautionary because I do have underlying chest and lung issues.
“It (the vaccine) protected the people around me who I’ve been close to over this last period of time and I am so grateful for that because I would not want anyone else in this situation. I truly believe it reduced what happened to me and what could happen to me.
Wilson competes for the LA Current and was unable to race in Match 8 of the ISL season in Naples after returning a positive Covid-19 test.
On top of her 4x100m freestyle gold, she also won bronze in the 4x200m freestyle relay in Tokyo.
“It’s been a crazy few months and I believe being run down physically and mentally may have made me more susceptible,” Wilson wrote in an Instagram post on Sunday.
“I feel extremely unlucky but I do believe this is a huge wake up call, Covid is a serious thing and when it comes it hits very hard.
“I’d be stupid not to say I wasn’t scared. I’m so lucky for all my family, friends and support people. I can’t believe how much love I have been shown and I’m forever in debt to these people.”
In a separate Instagram post on Sunday, Wilson said she “already feel(s) so much better” and that “the biggest thing I can say is please get vaccinated.”