A toddler in Texas tested positive for coronavirus, Collin County officials confirmed Tuesday.

The 3-year-old was one of five family members tested hours after the child's father tested positive for COVID-19, according to the county's statement. The child's mother also tested positive for the virus, bringing the total number of confirmed cases of the virus in Collin County to three.

The man's wife, four children and a close family contact were all tested Monday afternoon. One school-age child had an inconclusive test and is being retested, and all other tests were negative, according to officials.

Officials said the man is believed to have been exposed to the virus during a business trip to California in late February, adding that he did not show any symptoms while flying home.

The Dallas Morning News reported the man had recently traveled to Silicon Valley, citing County Judge Chris Hill. Large gatherings in Silicon Valley were banned by Santa Clara County officials Tuesday after the county reported its first death of a patient infected with the disease.

Collin County officials said the family's school-age children did not have any symptoms and were not contagious at any time while they attended school.

The 3-year-old who tested positive for the virus did not attend a daycare, county spokesman Tim Wyatt confirmed to The Dallas Morning News.

All seven individuals tested are in stable condition in a self-quarantine in their own homes, according to the county's statement.

The risk remains low in Collin County, according to the statement.

There were 13 cases across Texas as of Tuesday morning, according to the state health department's update, which did not include the three newly confirmed cases in Collin County.

More than 800 cases have been confirmed across the U.S., according to data compiled by Johns Hopkins University.