The coronavirus has however infected increasing numbers of athletes and others involved with the Games, and authorities were on Friday trying to track down a Ugandan weightlifter who went missing from his training camp.
Preparing for the Paris Olympics along with her teammates, Batra said she has learned from her Tokyo Games experience.
The 32-year-old, who has also won world championship medals in the 200m and the long jump and is competing in her fourth Olympics, had comfortably won her 100m heat in Tokyo on Friday with a time of 11.05 seconds, qualifying for Saturday's semi-final.
Nigerian sprinter Blessing Okagbare has been banned for 10 years for doping in the lead-up to the Tokyo Olympics and refusing to co-operate with the investigation.
The current Olympic champion Italy's Marcell Jacobs, who has had a wretched time with injury since his shock Tokyo success, looked a little sluggish in finishing second in 10.05 behind Nigerian heat winner Kayinsola Ajayi (10.02).
'In women's singles now, there are a lot of long rallies and long matches, being consistent. I am confident in that now.'
Nigerian sprinter Nzubechi Grace Nwokocha, who won gold in the 4x100m relay at this year's Commonwealth Games, has been provisionally suspended for the use of banned substances, the Athletics Integrity Unit (AIU) said on Saturday.
Forty years after its first edition, the world athletics championships get underway in Budapest on Saturday with over 2,000 athletes from 202 countries taking part over nine days of what could be record-breaking action.
Such was Tokyo Olympics bronze medallist Bajrang's dominance in the 65kg competition that he won three of his four bouts inside first rounds.
The CWG will be important not only for Vinesh and Sakshi but also for Bajrang Punia, who has been a bit iffy about his attacking prowess
An intimidating Vinesh Phogat pounced on her rivals to complete a hat-trick of Commonwealth Games gold medals while Ravi Dahiya too went unchallenged as India's wrestlers wrapped up their campaign with a rich haul of 12 medals, in Birmingham on Saturday.
alaika Mihambo of Germany snatched the Olympic gold in women's long jump with her final leap of 7.00 metres in an enthralling final at the Tokyo Games on Tuesday.
The former world champion ended with a total lift of 201kg (88kg+113kg), which is far from her personal best.
Trayvon Bromell, the fastest in the world this year and favourite to win the Olympic men's 100 metres gold, sneaked through the first-round heats as a fastest loser on Saturday, pouring even more intrigue into Sunday's final.
Selemon Barega of Ethiopia won the men's 10,000 metres gold medal, the first of the Olympic athletics programme, on Friday, defeating world champion and world record holder Joshua Cheptegei of Uganda.
India have finished as the best-performing nation in the sport in the 1990, 2002, and 2018 Commonwealth Games.
Bajrang Punia lost his semi-final bout against home wrestler Daulet Niyazbekov under controversial circumstances after he secured his place in the Tokyo Olympics along with debutant Ravi Dahiya at the World Wrestling Championships.
Rediff.com introduces you to the athletes who have brought India glory in Birmingham.
The Rio bronze-winner has tweaked her leg defence on the insistence of her coach Kuldeep Singh Malik, something that has already got her a gold in the Commonwealth Championships in December last year.
A round-up of results from the final day of the World Athletics Championships in Doha on Sunday
Images from Thursday's proceedings at the IAAF World Athletics Championships in Doha.