2025 Flu Symptoms. Keep an eye out for early symptoms, consider your child’s. Brits have been told to book an “urgent” gp appointment if symptoms don’t improve after seven days amid what the nhs has called potentially the “worst” flu season yet.
People who have the flue feel some or all of these signs: Most people who catch the flu have only the above mild symptoms and recover on their own without the use of antiviral.
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