The fire broke out at around 2 pm on Thursday at the 'Blue Zone', where all meetings, negotiations, country pavilions, media centre and offices of all high-profile dignitaries are housed, including the main plenary hall.
As soon as news of the fire spread, people ran out of all exit gates for safety. The authorities closed the venue for a thorough safety inspection and reopened it after more than six hours at 8:40 pm, sans the country pavilions -- the area which caught fire.
"...according to updated data as of 6 pm this Thursday, 21 people have received medical care as a result of the fire that affected the Blue Zone of the event," the Brazilian Ministry of Health said in a statement.
Of the total cases, 19 are related to smoke inhalation and two to anxiety episodes following the incident. There have been no reports of individuals sustaining burn injuries from the flames, it added.
"Patients were promptly assisted and 12 have already been discharged. The remaining individuals are receiving appropriate care in health facilities in Belem and in a designated referral unit for such cases," the statement said.
Municipal, state and federal health teams continue to monitor and follow up on the medical assistance and health status of those affected, it added.
It is learnt that UN Secretary-General Antonio Guterres was present at the venue and promptly evacuated by the United Nations Department of Safety and Security (UNDSS) protection detail.

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