Adenoviruses
Immune System and Lymphatic System
Respiratory System
Spectronosodes
People
Adenoviruses are the main group of viruses which can be isolated from lymphoid tissues of Waldeyer's tonsillar ring and excrements from any apparently healthy person. Adenovirus infections are highly spread and contain 5-10% from all virus pathology. Adenovirus infections affect infants and young children much more frequently than adults. Adenovirus infections are transmitted by direct contact, fecal-oral transmission. Incubation period is 4-5 days. Outbreaks of adenovirus-associated respiratory disease happen more common in the late winter; however, adenovirus infection can occur throughout the year. Pharyngoconjunctivitis (pharyngoconjunctival fever) often seen in infant and young children. Keratoconjunctivitis is a more severe infection that involves both the conjunctiva and cornea and can occur after trauma or medical manipulations. Adenovirus often affect the lower respiratory tract as well.