The Los Angeles County Public Health Department announced Monday that it is implementing a special protocol for mainland Chinese visitors to examine travelers for coronavirus when they enter the United States.

The decision was made in response to ongoing coronavirus infections reported by the U.S. Centers for Disease Control and Prevention.

L.A. County's protocol will involve increased biotesting in medical facilities of mainland Chinese travelers, which is required under the World Health Organization protocol.

Formal procedures for coronavirus testing in hospitals and medical facilities will be implemented by April, officials said.

“During a time of heightened global health threats, we are vigilant in identifying and addressing global infectious disease risks,” said Dr. Jonathan Fielding, the county's health officer. “The L.A. County Public Health Department is committed to working with international partners, and conducting testing in our local facilities, to prevent the spread of this potentially dangerous virus.”

The China Mainland Travel Council reported Monday that more than 22,000 mainland Chinese tourists are coming to Los Angeles County for vacation this year.