1 Rotavirus is the leading cause of gastroenteritis among children 3 to 15 months old. 2  Most children have been exposed to the virus by age 2. Children with rotavirus have vomiting and watery diarrhea for 3 to 8 days, along with fever and abdominal pain. Symptoms of rotavirus infection appear 1 to 2 days after exposure. 2  In the United States, rotavirus infections are most common from November to April. 3  Adenovirus serotypes 40 and 41 cause gastroenteritis mainly in children younger than 2 years old.
A capnograph is a device that measures the concentration of CO2 in exhaled air. It is used to monitor patient status for different types of illnesses. The device graphs partial pressure of CO2 vs. Time.
(May 2009). A hydrograph is a graph showing the rate of flow (discharge) versus time past a specific point in a river, or other channel or conduit carrying flow. The rate of flow is typically expressed in cubic meters or cubic feet per second (cms or cfs). The end of stormflow (aka quickflow or direct runoff) and the return to groundwater-derived flow (base flow) is often taken as the point of inflection of the recession limb. 2  The recession limb represents the withdrawal of water from the storage built up in the basin during the earlier phases of the hydrograph.