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A persistent dry cough over an hour or three times in 24 hours may indicate Covid-19, per NHS guidance.
The NHS states that while flu usually causes a sudden-onset dry cough, a persistent dry cough lasting more than an hour or occurring three or more times in a 24-hour period may indicate Covid-19.
Fever, exhaustion, and sore throats are common symptoms of both, but Covid is more likely to cause shortness of breath and loss of taste or smell.
If symptoms worsen or last longer than five days, the NHS recommends staying at home, getting tested for confirmation, and seeking medical attention—especially for people over 65, pregnant, or with underlying medical conditions.
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Una tos seca persistente durante más de una hora o tres veces en 24 horas puede indicar Covid-19, según la guía del NHS.