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JEFFERSON CITY -- Update: Friday, May 1, 10:15 p.m.

Missouri now has one confirmed case of swine flu and three suspected cases.

The state health department says tests on samples from two members of a central Missouri family indicated possible swine flu. Those tests were done by the State Public Health Laboratory.

The samples will now be tested at the federal Centers for Disease Control and Prevention for confirmation.

Details about the central Missouri family weren't being released Friday night, except that they recently traveled to Mexico.

Earlier Friday, the CDC announced Missouri's first confirmed case -- a 30-year-old Platte County woman in the Kansas City area who's recovering well.

The other suspected case is a 19-year-old Kansas City man who was in a Nebraska hospital being treated for another health condition.

Update: Friday, May 1, 2:05 p.m.

U.S. health officials have confirmed the first case of swine flu in Missouri.

The Centers for Disease Control and Prevention said Friday that a Kansas City-area woman in her 30s has contracted the virus, making hers the first confirmed case of swine flu in Missouri.

The Platte County woman, who recently returned from Mexico, has received antiviral medicine, was not hospitalized and was recovering well.

The state Department of Health and Senior Services says it has distributed medical supplies and antiviral medications to every county in the state.

On Thursday, health officials said the state had a second probable case of swine flu. But that case, a 19-year-old man from the Kansas City area, has not been confirmed by the CDC.

Update: Thursday, April 30, 1:15 p.m.

Missouri has a second probable case of the swine flu.

State Health Director Margaret Donnelly said Thursday that tests show a Missouri resident who visited a health care center in Nebraska probably has the virus. She did not release further details about the person.

But Donnelly did provide more details to The Associated Press about the state's first probable swine flu victim, who had been announced Wednesday evening. Donnelly says the Platte County resident is an adult who had traveled to Mexico.

The swine flu has been most heavily concentrated in Mexico. The U.S. Centers for Disease Control and Prevention says at least 120 swine flu cases have been confirmed in 16 states.

Previous: Wednesday, April 29, 6:15 p.m.

Gov. Jay Nixon says Missouri has a probable case of the swine flu, or the H1N1 virus, as health officials prefer to call it. 

Nixon announced a suspected case of swine flu involving a Platte County resident Wednesday evening at a hastily called Capitol news conference.

Platte County is in western Missouri and covers part of Kansas City.

The person with the probable virus is not being identified by name or gender.

The administration says anti-viral medications are on their way to Platte County, and more medication will be sent to all other parts of the state, just in case.

Nixon says dozens of other Missourians have been tested for the swine flu this past week, but no others so far have tested positive.

Platte County health officials will work now to determine if anyone else who came in contact with the person with the swine flu might now also have the virus.

The swine flu is believed to have originated in Mexico, where it's confirmed or suspected in more than 150 deaths and nearly 2,500 illnesses.

It was not immediately clear if the Platte County resident had traveled to Mexico.

In the U.S., there have been nearly 100 confirmed cases in at least 10 states from coast to coast, including one death in Texas.

KRCG has a special Web page devoted to information about swine flu. Click here to learn more.