Update: A correction has been made to this article. Dr. Greene has amended the number of cases in the region. There are five, not six.

WINCHESTER — The number of cases in the region diagnosed with the coronavirus increased to five on Tuesday.

Two cases were reported in Frederick County and three in Shenandoah County. One of the cases is a man who was visiting the area, according to Dr. Colin M. Greene, Lord Fairfax Health District director. The district encompasses Winchester as well as Clarke, Frederick, Page, Shenandoah and Warren counties. The first diagnosis in the area was on Saturday.

Greene said he didn’t know the conditions of the people and wouldn’t identify them due to a medical privacy law. Contact tracing on the whereabouts of the people before they were diagnosed is being done by health officials. Greene said he was unaware if anyone the infected people came in contact with has self-quarantined.

The virus, for which there is no vaccine, was declared a global pandemic on March 11. Through Tuesday afternoon, it has killed 18,614 worldwide, according to the John Hopkins University of Medicine Corona Virus Resource Center. That includes 534 in the U.S., according to the New York Times.

Because of the Centers for Disease Control and Prevention’s failure to provide test kits — some 300,000 people have been tested in South Korea while the CDC said on Tuesday that just 88,000 had been tested nationally — the infection rate is far higher than the number of people diagnosed. The number of diagnosed cases is expected to rise in the next few weeks in the U.S. including Virginia where 290 people have been diagnosed and seven have died, according to the Virginia Department of Health. “The curve is still going up and bending outward,” Greene said, adding that it could be weeks before the numbers level off or decrease in Virginia.

Until the numbers drop, Greene said people need to remain indoors except for exercise and essential trips outside such as for food or medicine. They should stay 6 feet away from people they’re near for more than short periods of time and wash their hands or use hand sanitizer before and after touching their face.

“All the requirements need to stay in place until this is very clearly coming under control,” Greene said. “At least at the Virginia level.”

— Contact Evan Goodenow at egoodenow@winchesterstar.com