Peter Sagan and his brother Julai tested positive for COVID-19 for the second time 11 months after their first viral infection.

Three-time world champion Peter Sagan announced the news via social media on Tuesday.

"My brother Julai and I were tested for COVID-19 and unfortunately we tested positive. We have symptoms related to the virus and we are following the measures set forth by the authorities concerned. We will report back to you."

Sagan was scheduled to present his 2022 Total Energy racing kit at the French team's service course in France on January 10, followed by a training camp in Calpe, Spain.

However, according to the latest French COVID-19 regulations, he will now have to be quarantined at his home in Monte Carlo for at least five days to prove he is negative. He must also undergo a series of tests to ensure that he is healthy enough to train and race according to the UCI COVID-19 medical protocol.

He was scheduled to debut in the TotalEnergies colors at the Vuelta a San Juan in Argentina, but the stage race in early February was cancelled due to COVID-19.

Last year, Sagan, his brother Yulai, and Eric Bashka, then teammate of Bora Hansgrohe, tested positive for COVID-19 during a private training camp in Gran Canaria in early February 2021.

Spanish health regulations in effect at the time mandated that they be quarantined for 10 days. This put a damper on Sagan's early season form and forced him to miss the season opener in Belgium and the Strade Bianche in Italy; he started the 2021 season with Tirreno-Adriatico and finished fourth in Milano-San Remo. However, he only raced the Tour de Flanders (where he finished 15th) before racing the Tour de Romandie in preparation for the Giro d'Italia.

He won a stage to Foligno and rode consistently on other stages to take the points jersey, but Sagan's difficult season continued when he crashed with Caleb Yuan on stage 3 of the Tour de France and retired with a knee infection before stage 12

Sagan was also forced to retire from the race.

Sagan signed a two-year contract with French pro team Total Energies in 2022, aiming to win bigger races and grow. He was instrumental in bringing Specialized and clothing brand Sportful to the team as major technical sponsors.

"There were several teams that showed interest, but the team in Bernaudeau showed me the most respect," Sagan told Vélo Magazine last November.

In late November, Sagan apologized after a Monaco court fined him €5,000 for violating the COVID-19 curfew and injuring a police officer when he and his brother Julai were stopped last April.