Fernando Gaviria of UAE Team Emirates has tested positive for the corona virus and will not step on Tuesday for the sixteenth stage in the Giro d'Italia.
A staff member of AG2R La Mondiale also has the COVID-19 virus in his body.
It is the second time that Gaviria has tested positive for COVID-19.
At the end of February, he also became infected in the Tour of the United Arab Emirates, the WorldTour race that could not be completed due to several corona cases.
Gaviria is, just like the staff member of AG2R La Mondiale, in quarantine, as prescribed by the protocol of the international cycling union UCI.
Last week there was already another staff member of AG2R who had to leave the Giro due to a positive test.
A total of 492 tests were performed on Sunday and Monday.
With 'only' two positive cases, this test round is a lot less disastrous than last week, when Jumbo-Visma leader Steven Kruijswijk and Michael Matthews (Team Sunweb), among others, tested positive.
Jumbo-Visma then decided to leave the Tour of Italy.
Mitchelton-SCOTT, where four staff members tested positive for the COVID-19 virus a week ago, also withdrew.
The team lost Simon Yates in the first week for the same reason.
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Partly due to concerns in the peloton about the many corona cases, the UCI announced last week to carry out more tests.
The riders were also tested last Thursday and Friday, but no new positive cases came to light.
This relatively trouble-free test round is good news for Wilco Kelderman, who has a good chance of winning the overall victory in the final week of the Giro.
The Dutchman of Sunweb is in the general classification fifteen seconds behind rosette jersey wearer João Almeida.
The Tour of Italy continues on Tuesday after a rest day with a hilly stage from Udine to San Daniele del Friuli over 229 kilometers.
The tough mountain stages are on Wednesdays, Thursdays and Saturdays.