With the FIFA World Cup underway across North America, millions of fans from around the world are gathering in stadiums and cities — bringing excitement, but also potential health risks.
Public health officials are closely monitoring concerns ranging from heat-related illness and mosquito-borne diseases to foodborne illness and the spread of infectious diseases in large crowds.
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Experts say the scale of the event makes preparedness essential.
"Well, it is a big concern," cardiologist Chauncey Crandall told Newsmax's "Bianca Across the Nation."
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"You have large crowds, millions of people… across the U.S. that are going to be saturated with people from all over the world," said Dr. Crandall, director of preventive medicine at the Palm Beach Cardiovascular Clinic in Florida.
With visitors arriving from more than 100 countries, there is an increased risk of exposure to illnesses that may not be common in the U.S.
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"People are bringing their problems … with diseases and infirmity," Crandall said, noting that large gatherings can make it easier for infections to spread.
Another key concern is the potential strain on local healthcare systems.
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"The main concern is that the healthcare system in each city is going to be saturated with people that are going to have problems," he said.
Despite these risks, basic precautions can go a long way in keeping fans safe.
How to Protect Yourself
Crandall says commonsense health habits are the best defense when attending any large events or traveling.
"I think you need to … take precautions. We wash our hands, we eat sensibly, we watch the food that we eat, we get enough rest, we don't get overheated and we don't drink too much," said Crandall, editor of the popular newsletter Dr. Crandall's Heart Health Report.
Staying hydrated, avoiding excessive heat, and being mindful of food safety are especially important during summer events.
Health officials are also taking steps behind the scenes, including monitoring travelers and preparing hospitals and emergency services in host cities.
Experts say that while the risks are real, they shouldn't overshadow the experience — as long as people stay aware and take simple precautions.
"I think people can use good common sense … and they can be free of most of the problems that might come up at these events," Crandall said.