HAV causes infectious hepatitis, an illness characterized by inflammation and necrosis of the liver. Rotaviruses cause acute gastroenteritis, especially in children. Adenoviruses can infect both the intestine and the upper respiratory tract. Enteroviruses can infect both the intestine and the upper respiratory tract. Enteroviruses have been detected in wastewater, natural water, and finished drinking water.
Reoviruses can infect both the intestine and the upper respiratory tract.
Reoviruses have been detected in wastewater, natural water, and finished drinking water. Certain environmental factors may affect the viability of viruses. Viability is maintained when high levels of suspended sediment in water provides substrates to which the viruses can adsorb. Members of the enteric viruses infect the gastrointestinal tract of humans and may be spread through water. Enteric viruses of particular concern in water are hepatitis A, Norwalk-type viruses, rotaviruses, adenoviruses, enteroviruses, and reoviruses.