Louisiana Reports One of the Nation’s Highest Flu Activity Levels as Cases Rise Early and Doctors Urge Residents to Get Vaccinated Now

BATON ROUGE, LA — Louisiana is already seeing one of the highest flu activity levels in the country, even though the seasonal peak is still months away. The Centers for Disease Control and Prevention says most of the United States is still experiencing low to minimal flu activity, but Louisiana and Hawaii are showing moderate levels.

Doctors say the early increase matters because flu season has started sooner than expected. Dr. Fred Lopez of LSU Health New Orleans said Louisiana is seeing more flu-like illness than almost all other states right now, and that the current wave is being driven largely by one subtype of influenza.

CDC data puts Louisiana ahead of much of the country

The CDC’s latest national snapshot shows a sharp contrast between Louisiana and most other states. While flu activity remains low in much of the country, Louisiana stands out as one of only two states with moderate flu-like illness activity.

Lopez said that means Louisiana is dealing with a heavier burden earlier in the season than many places. The concern is not just the current case count, but the possibility that the state may continue to see elevated activity as colder months approach and more people begin gathering indoors.

That early rise is being watched closely by health officials because flu patterns can change quickly from week to week. Even if the national picture remains relatively quiet for now, Louisiana’s numbers suggest residents should not wait to start taking precautions.

H1N1 appears to be driving most of the infections

Lopez said most of the cases being seen now are tied to H1N1, also known as swine flu. He said this year’s virus appears to have picked up a mutation compared with the H1N1 strain seen last year.

That does not mean the current vaccine is useless. Lopez said the shot included for this season still contains the H1N1 strain, and even if it is not a perfect match, it should help reduce the chances of severe illness, hospitalization and death.

He also said it is too early to know exactly how effective this season’s vaccine will be overall. The CDC has not yet determined whether the mutation will reduce vaccine performance, and Lopez said that question will become clearer as the season develops.

Positive flu tests in Louisiana are running ahead of last year

The Louisiana Department of Health’s laboratory surveillance program shows the current positivity rate for influenza tests at 8.3% for the week ending Oct. 23. For the same week in 2025, the rate was 5.3%.

That increase suggests flu transmission is building earlier and faster than it did a year ago. While a test positivity rate does not capture every illness in the community, it is one of the signals health officials use to track how widely the virus is spreading.

Lopez said Louisiana is especially vulnerable year to year because vaccination rates are low and a larger share of residents are uninsured. Those factors can make it harder for people to get preventive care early, which can in turn increase the risk of more serious flu outcomes.

Health officials say vaccination remains the best protection

Even with questions about how this season will unfold, medical experts in Louisiana are urging residents to get their flu shots. Mary Winfield, director of the West Baton Rouge Parish Health Center, said people can get vaccinated through a local health unit, a doctor’s office or even a pharmacy.

Winfield said the annual vaccine remains the best form of protection against flu and helps reduce the risk of severe disease. Lopez echoed that point, saying the shot can still lessen the chance of hospitalization and death even if the circulating strain has changed somewhat.

He added that it takes about two weeks after a flu shot for immunity to build, which means people should not delay if they want protection before the season picks up further. Lopez said getting vaccinated by the end of the month or the first week of November would be a smart target.

Halloween gatherings raise the need for basic prevention steps

With Halloween approaching, Lopez and Winfield said residents should be especially mindful of basic hygiene when they are out with family and friends. They recommended washing hands before going out and keeping up good health habits during social events.

Winfield also suggested carrying hand sanitizer so people have a backup when soap and water are not available. The advice is meant to lower the chances of spreading germs during a busy holiday weekend when people are likely to be in close contact.

The doctors said those simple habits can make a difference, especially while flu activity is already running higher than usual in Louisiana. With the virus arriving early, they want residents to think about prevention now rather than waiting until the season reaches its peak.

Why Louisiana may face a tougher flu season than many states

Louisiana’s early flu spike is being shaped by a mix of public health factors and seasonal timing. Health experts say the combination of low vaccination rates, insurance gaps and a circulating H1N1 strain could make this year more difficult than average.

Lopez said the state has long been vulnerable to flu outbreaks, but the early numbers are a reminder that residents should be proactive. He said the best protection is still vaccination, paired with hand hygiene and common-sense precautions when illness is spreading in the community.

For now, Louisiana remains an outlier in a country where most places are still seeing minimal flu activity. But the state’s current numbers show how quickly the season can get underway, and why public health officials are urging people to prepare before cases climb further.