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In the U.K., public health warnings are urging people to look out for each other in the warm weather.

“With temperatures rising, we’re advising people to look out for friends, family and neighbors who may feel the heat more than others,” Emer O’Connell, a government consultant in public health, told ABC News in an email.

“People with heart and lung conditions, older people and young children can all struggle in warmer weather as their bodies find it more difficult to cope with higher temperatures,\" O'Connell wrote.

\"So our advice for everybody is look out for others, drink plenty of fluids and -- if traveling anywhere -- take water with you.”

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