Doctor Reveals the Key Warning Sign That Sets Flu Apart from a Common Cold Amid Rising Cases

With over 17 million flu vaccinations administered across the UK this year, cases are still surging as we approach Christmas, putting significant pressure on the NHS as it battles various viruses, including flu, RSV, and norovirus. These seasonal viruses are known to thrive during winter months, and experts are shedding light on why this happens and how to tell if you have a common cold or something more serious, reported by the Daily Record.

Dr. Jamie Winn from Universal Drugstore explained that viruses like the flu and common cold thrive in cold temperatures. “Viruses that cause flu and the common cold thrive in cold temperatures, meaning cases are more likely to rise as we head into the winter months,” he said. “Studies show that viruses, especially flu, travel better in dry air, and colder temperatures mean dryer air.”

In addition to colder weather, reduced sunlight leads to lower levels of vitamin D, which plays a key role in boosting the immune system and protecting against respiratory viruses. As people spend more time indoors to escape the cold, viruses spread more easily due to less ventilation. “With the festive season, we also see an increase in travel which can help to spread any cold and flu viruses around the country,” Dr. Winn added, “People also tend to increase their alcohol consumption at this time of year, something which can lower the immune system and make us more susceptible to catching viruses.”

The flu virus is constantly evolving, making it crucial to stay updated with annual vaccinations. Dr. Winn emphasized, “There are many different strains of the flu virus, and these are constantly evolving, that’s why it’s important to stay on top of flu vaccinations as they update each year.” He noted that some strains mutate rapidly, outsmarting vaccines and treatments, and making them more contagious.

Flu and cold viruses spread through tiny droplets in the air from coughs, sneezes, and talking. Dr. Winn said, “People will be most contagious with the flu three to four days after their symptoms begin, but you can transmit it before you even feel sick.” He advised good hygiene practices, including handwashing, using tissues, and maintaining good ventilation in indoor spaces.

While flu and cold symptoms often overlap, they are caused by different viruses. “The flu tends to be more severe, with sudden symptoms like a high fever, body aches, and chills,” Dr. Winn explained, “while the common cold usually causes a productive cough, sore throat, and nasal congestion.”

Dr. Winn also emphasized the importance of flu vaccinations for personal and community protection. “Flu vaccinations are incredibly important, not just for yourself but also for community protection,” he said, noting that regular flu jabs can help reduce strain on healthcare systems and protect vulnerable individuals.

For treating flu symptoms, rest, hydration, and over-the-counter medications like acetaminophen, ibuprofen, and guaifenesin can help alleviate discomfort. “If you are diagnosed with the flu within 48 hours of your symptoms, your healthcare provider may prescribe antiviral drugs,” Dr. Winn said. For colds, it’s important to seek medical advice if symptoms persist for more than a week or if you experience high fever or difficulty breathing.