The influenza virus can be dangerous in older people and in those patients who are immunocompromised. Types A and B affect humans, with type A generating more severe symptoms. The flu is caused by the influenza virus, classified as type A, B, or C. The common cold is often mistaken for the flu. 3 While the cold does not cause serious illness or complications in most cases, patients with comorbidities may be at a higher risk for complexities such as exacerbations of asthma, chronic obstructive pulmonary disease, and pneumonia. 2 In addition to age, factors such as stress and lack of sleep may increase the risk of the common cold. Data indicate that children experience colds about six to eight times a year, adults younger than age 60 years tend to have two to four colds per year, and adults older than age 60 years usually have only one cold a year. 2 The incidence of the common cold declines with increasing age. Generally, most symptoms subside within 7 to 10 days, although some symptoms can persist for up to 3 weeks. ![]() 1 Symptoms commonly associated with the common cold include coughing, nasal congestion, low-grade fever, and fatigue, usually presenting 1 to 2 days after exposure. Typically, it is an acute, self-limiting viral infection of the upper respiratory tract that is most frequently caused by rhinoviruses. ![]() The common cold is a condition that is prevalent in the community and is associated with a variety of symptoms.
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