The athlete, one of the favorites for the 200m and 400m world titles prior to the championships, pulled out of the 200m heats Monday after a reported bout of food poisoning. Makwala, 30, had posted the quickest 200m time of the season (19.77 seconds) ...
Approximately 30 people have fallen ill, with laboratory tests confirming two of those cases as the norovirus -- an unpleasant but rarely serious stomach bug which causes gastroenteritis (diarrhea and vomiting).One of the stars affected is Botswana's Isaac Makwala, who has withdrawn from Tuesday's men's 400m final on medical grounds.The athlete, one of the favorites for the 200m and 400m world titles prior to the championships, pulled out of the 200m heats Monday after a reported bout of food poisoning.Makwala, 30, had posted the quickest 200m time of the season (19.77 seconds) coming into these championships and was expected to challenge 400m Olympic champion Wayde van Niekerk over both distances in England's capital.
In a statement on his Facebook page, Makwala said Monday: "According to IAAF medics I am apparently suffering from food poisoning which has affected several other athletes in the athletes' hotel."
He had hoped to be fit for the 400m final, but in a statement the sport's governing body the IAAF said the athlete had withdrawn "due to a medical condition on the instruction of the IAAF Medical Delegate (Rule 113)."
Van Niekerk aiming for Bolt's 200m record 02:59
READ: The 'very boring' man who could replace Bolt
Recovery expected without treatment
Ireland's Thomas Barr withdrew from the 400m semifinals, while German and Canadian athletes also staying at The Tower Hotel near Tower Bridge have reportedly been affected too.
In a statement to CNN, Dr Deborah Turbitt, Public Health England (PHE) London deputy director for health protection, said: "We have so far been made aware of approximately 30 people reporting illness and two of these cases have been confirmed as norovirus by laboratory testing.
"PHE has been working closely with British Athletics and the hotel to provide infection control advice to limit the spread of illness."
Public Health England said most peopled made a full recovery from the illness -- often caught through close contact with someone carrying the virus or by touching contaminated surfaces -- within one or two days without treatment.
Gatlin beats Usain Bolt in 100-meter sprint 03:24
READ: Gatlin confused by boos after beating Bolt
Hotel 'not source of the illness'
A spokesperson for The Tower Hotel told CNN it was "not the source of the illness," adding that the hotel was working closely with the sport's governing body, the IAAF, and environmental health officers to investigate the origins of the outbreak.
"We can confirm that regretfully a small number of our guests have been suffering from an illness," a statement read.
"We have followed strict hygiene protocol, ensuring that those affected are not in contact with other guests and all public areas have been thoroughly sanitized.
"We continue to liaise with the medical authorities and the IAAF to ensure the comfort of those guests affected and the health and well being of all our guests remains a priority."
World stars bid farewell to Usain Bolt 02:33
Working to ensure situation is contained
A statement issued by the Local Organizing Committee (LOC) said they had been working with Public Health England to ensure the situation was "managed and contained."
"Further advice and guidelines have been issued to team doctors and support staff -- standard procedure for such an occurrence where a number of teams are occupying championship accommodation," the statement read.
Under IAAF rules, Makwala would not normally be allowed to compete again at the championships after pulling out of an event, but because he missed the heats on medical advice he is expected to able to run, if fit.
sport,2017 World Championships: Athletes struck down by gastroenteritis in London,Makwala pulls out of 400m final - CNN