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Joe Edwards

By Joe Edwards

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Louisiana, Colorado, and New York are among the states with the highest number of influenza-like illness (ILI) symptoms, a new map from health officials shows.

The Centers for Disease Control and Prevention (CDC) has issued an updated map in its recent Influenza Surveillance Report for the week ending on November 29.

Why It Matters

According to CDC estimates, there have been at least 1.9 million illnesses, 19,000 hospitalizations, and 730 deaths from flu so far this season.

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What To Know

According to the CDC’s outpatient respiratory illness activity map, which is based on data reported to ILINet—which monitors visits for respiratory illness that includes fever plus a cough or sore throat, also referred to as influenza-like illness (ILI)—the states with the most visits in the week ending November 29 were Louisiana, Colorado, and New York, all three of which were classified as having "high" ILI activity levels.

Puerto Rico also appeared on the map with a "high" classification.

The CDC's map reflecting the proportion of outpatient visits to health care providers for influenza-like illness.

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Idaho and New Jersey were both in the "moderate" category for visits during this week, the CDC’s map showed.

States in the "low" category included California, Oregon, Texas, New Mexico, Missouri, Michigan, Ohio, North Carolina, South Carolina, Georgia, Florida, Maryland, Connecticut, Rhode Island, Hawaii, and Massachusetts. The District of Columbia was also included in this category.

Meanwhile, states included in the "minimal" category for visits in the week ending November 29 were Maine, New Hampshire, Vermont, Pennsylvania, Delaware, West Virginia, Virginia, Kentucky, Tennessee, Alabama, Mississippi, Indiana, Illinois, Wisconsin, Minnesota, the Dakotas, Nebraska, Arkansas, Oklahoma, Iowa, Kansas, Wyoming, Montana, Arizona, Utah, Nevada, Alaska, and Washington.

The CDC noted in its report that the data represents visits for ILI, not laboratory confirmed influenza and may capture patient visits due to other respiratory pathogens that cause similar symptoms.

According to the agency, those who have flu may experience some or all of the following symptoms:

It adds that not everyone with flu will have a fever, and that some people with influenza virus infections do not develop any symptoms at all.

What People Are Saying

The CDC says on its website: "Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year."

What Happens Next

The CDC issues regular updates and reports on its website.

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