A person attended a Shakira concert at the MetLife Stadium in New Jersey while infectious with measles.

Three new health reports detail growing concern about an animal sedative that’s showing up in the nation's illegal drug supply.

A measles outbreak across the US, including Florida, does not appear to be slowing down, and now, researchers at the Jacksonville Center for Clinical Research are speaking out about how it got here and why it continues to spread.

April 21 marks the beginning of National Infant Immunization Week, a crucial time to emphasize the role vaccines play in safeguarding children from preventable diseases.

April is Autism Acceptance Month. According to the CDC, one in 36 children in the United States have autism. Despite its prevalence, many families still have to wait months before they can get their child in to a specialist to be diagnosed.

In a story published Mar.

Bird flu has been detected in a Georgia commercial poultry flock for the first time since a countrywide outbreak in 2022.

Doctors are warning about a rise in illnesses as 2024 comes to a close, including Norovirus, whooping cough, and seasonal flu.

According to the CDC, about 48 million people get sick from food poisoning every year; and a common cause is E. coli.

The Centers for Disease Control and Prevention (CDC) is sounding the alarm about carfentanil, a synthetic opioid that is 100 times more lethal than fentanyl.

U.S. health officials said a California infant has died and at least 10 other people have been sickened in an outbreak of listeria food poisoning tied to ready-to-eat meat and poultry products that include chicken feet, duck neck and pork hock, feet and tongue.

There's some good news about sexually-transmitted diseases in newly released U.S. health data.

According to the CDC, more than 38 million Americans have diabetes, with 90% to 95% of those having Type 2 diabetes. And on top of that, another 98 million Americans have prediabetes.

The CDC reports there’s been an increase in cases of “walking pneumonia” among young children, which is sure to have some parents concerned.

Clay County Fire Rescue will host several Paramedicine Narcan events throughout Clay County in October to promote overdose prevention and understanding of narcotics.

Authorities in Congo say the first batch of mpox vaccine has arrived in Congo’s capital, three weeks after the World Health Organization declared mpox outbreaks in 12 African countries a global emergency.

As we head into flu season, doctors say now is a great time for those 6 months and older to get vaccinated.

Africa's public health body is seeing a rapid increase in mpox cases, with almost 4,000 reported on the continent in the last week.

Now, when you fly with your pet, you’ll need to fill out a “dog import” form and get CDC approval.

High blood pressure can increase your risk of heart attack, stroke, chronic kidney disease, and other serious health conditions. The CDC says high blood pressure contributed to more than 691 thousand deaths in the US in 2021. So how can you lower your blood pressure without medication?

Although fewer teens are lighting up a cigarette these days, more and more are turning to vaping. In fact, about one of every five high school students vape. But is it safer than cigarettes?

There have been 17 times as many U.S. measles cases in the first three months of this year compared with the average number seen in the first three months of the previous three years.

Millions of people, especially older people, fall every year, and those falls could lead to life-threatening injuries.

A large number of a common, but potentially dangerous sexually transmitted infection, is affecting several Northeast Florida counties, especially Duval County residents, according to the CDC.

There's a new Center for Disease Control warning about the spread of measles. There are currently 60 cases across the US and that includes Florida.

New measles cases in Florida prompted concern for a Jacksonville doctor as the state now has 10 confirmed cases, according to Florida Health data.

A measles outbreak at a South Florida elementary school has health officials warning of a rise in cases.

A new billboard around Jacksonville is bringing awareness to maternal syphilis rates during pregnancy, which according to the CDC more than tripled from 2016 to 2022.

Twenty-six people from seven states, including two people in Florida and Georgia, have been infected with the outbreak strain of Listeria, according to the Centers for Disease Control and Prevention (CDC).

Florida Surgeon General Joseph Ladopo called for a halt to the use of COVID-19 vaccines based on mRNA and said the vaccines could result in an illness.

The latest data from the Centers for Disease Control (CDC) revealed tens of thousands of people are being admitted to hospitals each week for one of three sicknesses, the flu, COVID-19, or RSV.

The Jacksonville City Council is expected to vote Tuesday on an initiative that aims to improve local rates of infant mortality.

Doctors are noticing a spike in respiratory infections across the United States including in Florida.

Almost three and a half million people suffer from epilepsy – a disorder of the brain that can cause seizures. For some, these seizures can be controlled with medication, others will need brain surgery, which can be risky. But now, new technology is helping doctors pinpoint what’s causing the seizures better than ever before.

More people are seeking mental health treatment than ever before. The CDC reports more than 21 percent of people are seeing a psychiatrist, psychologist, therapist, counselor, or social worker. But what keeps our mental health professionals sane? And what can we learn from them?

We could see an uptick in flu cases in the weeks ahead, and doctors say now is a great time for those 6 months and older to get vaccinated.

Children in the United States are more likely to die at the hands of a gun than in a car crash, from a drug overdose or cancer. That's just one of the troubling statistics in a new Centers for Disease Control study--- that found firearms killed a record number of children in 2021.

Many in the medical community and law enforcement are split on if first responders are in danger by fentanyl exposure alone.

What if there is a way to prevent your bones and joints from deteriorating? You may not need to spend money on expensive supplements, as you may be able to strengthen your bones and joints with what’s already in your kitchen.

More teens are depressed and the U.S. Surgeon General’s advisory issued in May 2023 indicates that social media may be playing a role.

Suicide deaths reached a record high in the U.S. last year. Data from the CDC shows at least 49,449 lives were lost due to intentional self-harm in 2022.One local woman is working to raise awareness for mental health with murals all across Jacksonville that direct people to get help. The latest mural is in San Marco Square and is one of eleven in the city.

The FTC and FDA are sending cease and desist letters to sellers of edible Delta 8 products and telling them to stop marketing products that may entice young children.

Fentanyl test strips are now legal in the state of Florida after a bill signing this week formally decriminalizing the strips.

Five cases of malaria have been detected in the U.S. in the last two months.

More than half of all Americans will be diagnosed with a mental illness at some point in their lives. But some small steps can make a big difference.

The U.S. has approved the first vaccine for RSV, shots to protect older adults.

Older Americans and people with weak immune systems can get an extra COVID-19 booster dose this spring.

New data details the nation’s worsening tide of sexually transmitted infections, but health officials are hoping an old drug will help the fight.

Are your children eating fruits and veggies daily? According to the CDC, many children between the ages of 1 and 5 are not.

For every American killed by gunfire, an estimated two or more more survive, often with terrible injuries.

The Centers for Disease Control and Prevention reported 2.5 million cases of STDs in 2021. Health experts continue their focus on outreach in both metropolitan and rural areas.

For many, hearing loss is preventable. There are things you can do now to protect one of your most vital senses.

U.S. cases of a dangerous fungus tripled over just three years, and more than half of states have now reported it, according to a new study.

U.S. cases of a dangerous fungus tripled over just three years, and more than half of states have now reported it.

A report shows 32 people in the United States are killed every day in crashes involving an alcohol-impaired driver. That's one death every 45 minutes.

Kids needing more shut eye before school is the rationale behind a new bill making its way through Tallahassee.This bill would prevent middle schools from starting before eight and high schools before 8:30 a.m.

Prior to the pandemic, the dirtiest place in the hotel was the bathroom. Now, a study from the journal “Emerging Infectious Diseases” found COVID-19 germs are still rampant in the bathrooms.

According to the CDC, about one in three Americans will develop some form of cancer during their lifetime.

Almost 60% of U.S. high school girls reported feelings of persistent sadness or hopelessness in 2021, representing a 60% increase in these emotions among girls over the past 10 years, according to a newly-released survey conducted by the Centers for Disease Control and Prevention.

The Commissioner of Education sent a letter to the Duval Schools’ Superintendent, Dr. Diana Greene, “strongly urging” that the district needs to end its participation in a CDC youth-risk behavior survey (YRBS) and instead participate in a new one developed by the state.

How often should Americans get their booster shot against COVID-19, and how important is the booster to you if you’ve already been infected with COVID-19? Those are questions a panel of experts set out to answer during an FDA meeting, the information will be passed on to the CDC.

Vaccination rates for U.S. kindergarteners are down again, and federal officials are launching a new campaign to try to bring them up.

As COVID-19 surges in China, the U.S. is expanding its traveler surveillance program, an early warning system for detecting new variants.

Flu is decreasing in many parts of the country after an alarmingly early and strong start to the season.

Consumer Reports found an alarming number of families use their oven to heat their home, putting their health and safety at risk.

The flu is spreading fast across the country. So far this flu season, the CDC says nationwide, there have been at least:

A new study revealed some startling numbers about just how many U.S. deaths can be blamed on excessive drinking.

In honor of "World Sight Day," local doctors are giving free glaucoma screenings Thursday.

A federally funded study has found a possible link between aluminum in some childhood vaccines and persistent asthma, but experts say the study has several shortcomings.

Cases of the monkeypox virus in Florida have more than tripled this month. However, health officials believe there is reason to be optimistic.

The CDC rolled out several new guidelines last week involving schools.

Monday is the first day of the new school year for students in Duval County.

Florida is leading the nation in overdose deaths with a new synthetic drug called eutylone.

The World Health Organization is convening its emergency committee to consider for the second time within weeks whether the expanding outbreak of monkeypox should be declared a global crisis.

The Food and Drug Administration, along with the Centers for Disease Control and Prevention, is helping the Florida Department of Health and Florida Department of Agriculture and Consumer Services investigate a listeria outbreak linked to ice cream, the FDA said Tuesday.

One death and nearly two dozen hospitalizations are being tied to a new listeria outbreak of unknown origin.

The News4JAX Trust Index team is taking a look at a claim in a political commercial for Georgia Democratic candidate for governor Stacey Abrams.

For most of the past month, the state has averaged between 10,000 and 11,000 cases a day reported to the Centers for Disease Control and Prevention.

Out of all the states, Florida was the only one to not pre-order more COVID-19 vaccines to give to kids.

Sunday marked the first day travelers entering the United States didn’t have to test for COVID-19.

Florida is averaging more than 10,000 new cases daily. With the rapidly growing amount of cases, people are encouraged to be cautious around others.

Nigeria has recorded its first death from monkeypox in 2022 while Congo has confirmed nine deaths and 465 cases this year.

Certain communities in Florida face greater health challenges than others, according to former Florida Surgeon General and CDC Deputy Director Doctor Celeste Philip.

The U.S. is releasing more doses of the monkeypox from a national stockpile as health officials try to contain the global outbreak.

The Food and Drug Administration on Tuesday approved children ages 5 to 11 to get a booster dose of Pfizer’s COVID-19 vaccine.

U.S. health officials are now looking into more than 100 possible cases of a mysterious and severe liver disease in children, including five deaths.

It is Hurricane Preparedness Week -- an important reminder that Hurricane Season is less than a month away and NOW is the time to get ready.

U.S. health officials are restating their recommendation that Americans wear masks on planes, trains and buses, despite a court ruling last month that struck down a national mask mandate on public transportation.

The CDC is asking physicians nationwide to be on the lookout for these unusual cases.

People will have to keep their masks on while flying on planes a little longer.

After weeks of a decrease in the number of COVID-19 cases in the state, Florida is experiencing a rise in cases again.

House Speaker Nancy Pelosi has tested positive for COVID-19, her spokesman says.

After the last couple years of living through a global pandemic, it seems as though most of us are itching to get in some good travel time.

You can bet a lot of people will be celebrating St. Patrick’s Day this year as COVID-19 cases continue to decline. But, some may still be wondering if it’s safe to socialize.

March is National Colorectal Cancer Awareness Month, which is a time set aside every year to promote the importance of screenings.

A new study from the CDC is offering encouraging news for parents about preventing a debilitating condition caused by COVID in kids.

It has never been easier to get your hands on an at-home COVID-19 test.

Gov. Ron DeSantis on Wednesday weighed in on affordable housing and inflation in the state as rent and home prices continue to spike.

If you’re experiencing symptoms of COVID-19 or have been exposed to someone with the virus, the CDC said you should get tested. But, what if you can’t get access to a test right away due to the high demand?

The head of the Centers for Disease Control and Prevention says the agency is preparing to update information on its website about face masks but continues to recommend that everyone wear some type of mask.