County health officials had no details about the case but said they would discuss it later this afternoon.
This would be the third case of the novel coronavirus disease, known as COVID-19, in Santa Clara County. County officials announced their first case, and the first in Northern California, on Jan. 31. That involved a local man who had recently returned from travel to China.
That patient never required hospitalization and was monitored and treated at home. County health officials declared him fully recovered Feb. 20.
A second case in Santa Clara County involved a woman who also had recently returned from travel in China and was visiting relatives in the county. She was confirmed infected Feb. 2 but did not require hospitalization and has been described in good condition. County officials said Friday that she remains under observation with restricted travel at home.
The only other confirmed cases in the South Bay were a San Benito County couple in which county officials said Feb. 2 that the husband had been declared sick upon returning from travel from China and his wife caught the disease from him, marking the first case of person-to-person transmission in California.