Adenoviruses

The adenoviruses are DNA viruses common in animals and humans, frequently occurring in adults and children. There are more than 100 serologically different adenovirus types, with 49 types that infect humans. Adenoviridae is separated into 2 genera: the avian adenoviruses (aviadenoviruses) and the mammalian adenoviruses (mastadenovirus). Adenovirus is ubiquitous in animals, and in human populations, they may last long periods outside of a host, endemic throughout the year. Based on various serotypes, adenovirus is known as the etiologic mediator of multiple syndromes. It is spread via aerosolized droplets, direct inoculation to the conjunctiva, exposure to infected tissue, blood, and fecal-oral route. The virus infects multiple organ systems, though most infections are asymptomatic. Adenovirus is recognized to be oncogenic in rodents, but it has not yet been observed in humans. Adenovirus infections are self-limited in immunocompetent individuals, requiring only supportive measures. However, in immunocompromised individuals, the spectrum of disease is much more extensive, with outcomes potentially being fatal.