The common cold and the flu (influenza) are two of the most frequent illnesses people catch, but knowing the difference between them is important. Both are caused by viruses that affect the respiratory system, but their symptoms and severity can vary greatly. For those living in a new country, recognizing these signs is key to knowing when to seek rest or medical help.

The common cold is generally milder. Its symptoms often start slowly and primarily affect the head and throat. Key signs include a runny nose or stuffy nose, a sore throat, sneezing, and a mild cough. A fever is rare in adults, though children might get one. The cold usually runs its course in about 7 to 10 days, with the worst symptoms appearing in the first few days.

The flu, on the other hand, is much more serious and comes on suddenly. The initial shock of the flu often makes people feel too sick to go to work or school. Flu symptoms include a sudden, high fever (usually above 100°F or 38°C), intense body aches and muscle pain, severe fatigue (extreme tiredness), and sometimes a headache. While a cold focuses on the nose and throat, the flu affects the entire body. The flu can also lead to complications like pneumonia, making it necessary to see a doctor quickly.

The most important difference to remember is the severity and onset. If you feel fine one day and suddenly feel like you've been hit by a truck the next, it's probably the flu. If you feel slightly unwell, with a persistent cough and sore throat, it's likely a cold. The best advice for both is rest, fluids, and hygiene, like washing your hands frequently to avoid spreading the virus.