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An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. [ 3 ] [ 4 ] This commonly includes nasal obstruction, sore throat, tonsillitis , pharyngitis , laryngitis , sinusitis , otitis media , and the common cold .
Adenovirus infection can cause a gastroenteritis when it may present with diarrhea, vomiting, and abdominal pain, with or without respiratory or general symptoms. [2] Children under the age of one-year appear particularly vulnerable. [12] However, it usually resolves within three-days. [2]
Strep throat is a common bacterial infection in children. [2] It is the cause of 15–40% of sore throats among children [7] [13] and 5–15% among adults. [8] Cases are more common in late winter and early spring. [13] Potential complications include rheumatic fever and peritonsillar abscess. [1] [2]
The infection causes mild, cold-like symptoms but it can lead to severe lung infections like pneumonia and infant bronchiolitis and is especially dangerous to toddlers under two or with other ...
Sapovirus is a genetically diverse genus of single-stranded positive-sense RNA, non-enveloped viruses within the family Caliciviridae. [1] [2] Together with norovirus, sapoviruses are the most common cause of acute gastroenteritis (commonly called the "stomach flu" although it is not related to influenza) in humans and animals.
The Centers for Disease Control and Prevention lists the following as possible COVID-19 symptoms, but more could become common as variants change and develop: Fever or chills. Cough.
Rotavirus infections can occur throughout life: the first usually produces symptoms, but subsequent infections are typically mild or asymptomatic, [72] [48] as the immune system provides some protection. [73] Consequently, symptomatic infection rates are highest in children under two years of age and decrease progressively towards 45 years of ...
Typical infections of the upper respiratory tract include tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, certain influenza types, and the common cold. [3] Symptoms of URIs can include cough , sore throat , runny nose , nasal congestion , headache , low-grade fever , facial pressure, and sneezing .