Mayor Eric Garcetti of Los Angeles examined constructive for the coronavirus on Wednesday as he was attending an convention on local weather change in Glasgow.

The mayor’s Twitter account introduced the constructive check:

The convention — COP26, organized by the United Nations — introduced collectively world leaders and different delegates to set targets for reducing greenhouse gasoline emissions. Mr. Garcetti was attending because the chair of C40, a gaggle of mayors from all over the world who wish to ship motion on local weather change.

The convention required participants from exterior Britain to take each a fast coronavirus check and a extra delicate PCR check upon arrival within the nation. Every day of the convention, individuals additionally needed to self-administer a fast check and register a destructive outcome on-line so as to have the ability to enter the occasion’s essential venues.

Harrison Wollman, the mayor’s press secretary, wrote in an e mail that Mr. Garcetti “was taking common fast antigen exams day by day whereas on the convention, and people all got here again destructive. He took a PCR check in preparation for his flight residence, and that outcome was constructive.”

Mr. Garcetti spoke on Monday on the World Leaders Summit and on Tuesday at a C40 occasion. He skipped some occasions on Wednesday and remoted himself in his resort room after he examined constructive.

As for a way lengthy the mayor would stay there, Mr. Wollman mentioned, “We’re nonetheless figuring out subsequent steps, however the mayor will observe the recommendation of British public well being consultants.”

Frustrations amongst attendees over lengthy safety traces on the convention have been mounting — some complained that they needed to wait in line for greater than an hour. Verification of destructive exams and capability limits for assembly rooms have been contributing to the logistical issues.

Masks have been required on the convention, however attendees might be seen with their masks lowered relatively than overlaying their mouths and noses, and there was no social distancing. The crowded circumstances fueled concerns that poor air circulation within the convention venues might create an surroundings conducive to spreading the virus.

Organizers of the convention launched a letter on Tuesday apologizing for the difficulties.