USA was afflicted with stomach flu in connection with their training camp in Phuket, Thailand, and has had it continuously tough on site in Singapore during the World Championship preparations.
According to the American swimming site Swimswam, the United Kingdom is also affected.
On Monday evening, Italian Olympic gold winner Nicolo Martinenghi also revealed after his silver on 100 meters breaststroke that he vomited all night before the final.
I have heard five-six countries struggling with it. Here it is rotten month all year round so it is clear that you have to be careful. You wash your hands before food, you do not eat any cold dressing and any pink chicken.
We are not afraid, but we are prepared, she says.
Martina Aronsson tells that she came close to the stomach flu on Monday.
I was on the toilet yesterday and heard someone next to me who...she says and makes a "vomiting pose" with her face.
Breaststroker Daniel Kertes:
I avoid all shellfish I can and stick to really well-cooked chicken, rather dry than a little too "juicy". I stick to pasta and meat sauce, such things you know are low risk. Then I wash my hands as often as I can.
Freestyle swimmer Sofia Åstedt takes it easy.
One cannot go around and worry, one has to take care of one's own, wash one's hands and so on. We do not live with any countries that are affected, she says.
