A Humana employee in Louisville has tested positive for the coronavirus, the company said in an internal email Thursday morning.

Humana learned of the employee's test results Wednesday night, it said. Gov. Andy Beshear confirmed the results Thursday evening.

The employee works on the 12th floor of the Waterside Building, 101 E. Main St., and has been out of the office since March 2. They are receiving treatment and are in stable condition, the email said.

This is the county's second COVID-19 patient. The other Jefferson County patient is a 69-year-old male with a history of travel.

"Our highest priorities are to protect associates and preserve our ability to best serve and promote the health of our members," the email from Humana said.

The company recommended that "all Louisville-based associates who are able should begin to work at home."

"Taking this step right away will open up more physical space between teammates who cannot work from home," the email said, "and it will lessen the person-to-person risk of transmission."

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Those who cannot immediately begin working from home "but who could move to work at home with additional support" will receive that help in coming days. For employees who cannot work remotely, Humana is "creating safe spaces with appropriate social distancing."

The insurance giant is based in Louisville, where it employs about 12,000 people.

Humana spokeswoman Kate Marx confirmed to The Courier Journal that the employee preliminarily tested positive for COVID-19, but said she is "unable to share further detail given patient privacy and confidentiality."

Employees who work in proximity to the individual have been notified and have been asked to self-quarantine for a period of 14 days, following the Centers for Disease Control and Prevention guidelines. They are on leave and are being paid, according to Marx.

"In recent weeks, we’ve responded quickly to this evolving situation, including cleaning and disinfecting our work spaces, supporting good hygiene practices, raising employee awareness, restricting travel, and allowing employees to work from home — all in an effort to keep our people healthy," Marx said in a statement, adding that Humana will continue to coordinate with public health authorities.

Humana is not the only company in the city taking precautions in response to the coronavirus pandemic. Appriss Inc., a data and analytics service company headquartered in Louisville, is having all of its Derby City employees work from home indefinitely after one of its employees based out of Boston tested positive for COVID-19 on Thursday, according to Michael Davis, the company's co-founder and CEO.

“We decided out of an abundance of caution to alert our Louisville office employees to work from home," Davis told The Courier Journal late Thursday afternoon.

Kentucky coronavirus live updates: Get the latest information here

Davis added that the office includes about 450 employees, that the Boston employee has not been to the Louisville office in months, and that no employees in Louisville have been tested for or have shown signs of the coronavirus.

Outside of Louisville, other companies across the nation have been asking employees to work from home. Procter & Gamble CEO David Taylor asked office employees Thursday — including roughly 10,000 in Cincinnati — to try to work from home for the rest of March to keep employees safe from the coronavirus pandemic.

Additionally, Twitter, the social media giant headquartered in San Francisco, mandated Wednesday that all of its employees across the globe work from home.

State officials have confirmed 10 cases of the coronavirus in Kentucky as of Thursday evening: five in Harrison County, three in Fayette County and two in Jefferson County.

The first Jefferson County case was announced Sunday night. The patient was receiving treatment at Norton Brownsboro Hospital but has since been released to finish his isolation at home.

Coronavirus tracker: How many cases are in Kentucky? Where are they?

About 80% of the people who get COVID-19 have mild or no symptoms, according to the World Health Organization. But older adults and people with serious chronic medical conditions — including heart disease, diabetes and lung disease — are at higher risk, according to the CDC.

Doctors are still working on estimating the mortality rate of COVID-19, but it is thought to be higher than most flu strains, according to Johns Hopkins Medicine. That is partly because this is a new coronavirus, and people have no immunity to it.

Humana's stock (NYSE: HUM) was down by nearly 11% at the stock market's close on Thursday, trading at $293.05 per share. The company's stock was trading at $328.22 per share at market close Wednesday.

Reach Tessa Duvall at tduvall@courier-journal.com and 502-582-4059 or follow her on Twitter: @TessaDuvall. Reach Ben Tobin at bjtobin@gannett.com and 502-582-4181 or follow him on Twitter: @TobinBen.