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In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal. Mild illnesses in humans include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses), [1] [2] while more lethal varieties can cause SARS, MERS and COVID-19.
[1] [6] Symptoms usually last 3–5 days, but can be longer depending on cause. [2] [3] Complications can include sinusitis and acute otitis media. [2] Pharyngitis is a type of upper respiratory tract infection. [7] Most cases are caused by a viral infection. [2] Strep throat, a bacterial infection, is the cause in about 25% of children and 10% ...
Otitis media, or middle ear infection, involves the middle ear. In otitis media, the ear is infected or clogged with fluid behind the ear drum, in the normally air-filled middle-ear space. This is the most common infection and very common in babies younger than 6 months. This condition sometimes requires a surgical procedure called myringotomy ...
The common cold is the most common human disease [21] and affects people all over the globe. [40] Adults typically have two to three infections annually, [8] and children may have six to ten colds a year (and up to twelve colds a year for school children). [13] Rates of symptomatic infections increase in the elderly due to declining immunity. [41]
In late July, HV.1 accounted for just 0.5% of COVID-19 cases in the U.S., CDC data show. By Sept. 30, HV.1 made up 12.5% of cases, and by November, it was the dominant strain.
Nearly all COVID-19 cases in the United States right now are being caused by one, highly contagious variant called JN.1. The fast-spreading omicron subvariant currently accounts for over 93% of ...
Acute cases are typically due to bacterial infection, and chronic cases are often due to allergies and autoimmune disorders. [ 2 ] [ 3 ] The most common cause of otitis externa is bacterial. Risk factors for acute cases include swimming, minor trauma from cleaning, using hearing aids and ear plugs, and other skin problems, such as psoriasis and ...
Having fluid in there can be uncomfortable, serve as a breeding ground for infection, and not to mention cause a lot of pressure and pain in the ear. In some cases, it can even lead to hearing loss.